21265940480

素因数分解:

$2^{15}\times 5^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{79}}^1$

素因数の和:198

約数の個数: 256

約数和(自身を含む): 54357350400

約数和(自身を除く): 33091409920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 53, 62, 64, 79, 80, 106, 124, 128, 155, 158, 160, 212, 248, 256, 265, 310, 316, 320, 395, 424, 496, 512, 530, 620, 632, 640, 790, 848, 992, 1024, 1060, 1240, 1264, 1280, 1580, 1643, 1696, 1984, 2048, 2120, 2449, 2480, 2528, 2560, 3160, 3286, 3392, 3968, 4096, 4187, 4240, 4898, 4960, 5056, 5120, 6320, 6572, 6784, 7936, 8192, 8215, 8374, 8480, 9796, 9920, 10112, 10240, 12245, 12640, 13144, 13568, 15872, 16384, 16430, 16748, 16960, 19592, 19840, 20224, 20480, 20935, 24490, 25280, 26288, 27136, 31744, 32768, 32860, 33496, 33920, 39184, 39680, 40448, 40960, 41870, 48980, 50560, 52576, 54272, 63488, 65720, 66992, 67840, 78368, 79360, 80896, 81920, 83740, 97960, 101120, 105152, 108544, 126976, 129797, 131440, 133984, 135680, 156736, 158720, 161792, 163840, 167480, 195920, 202240, 210304, 217088, 253952, 259594, 262880, 267968, 271360, 313472, 317440, 323584, 334960, 391840, 404480, 420608, 434176, 507904, 519188, 525760, 535936, 542720, 626944, 634880, 647168, 648985, 669920, 783680, 808960, 841216, 868352, 1015808, 1038376, 1051520, 1071872, 1085440, 1253888, 1269760, 1294336, 1297970, 1339840, 1567360, 1617920, 1682432, 1736704, 2076752, 2103040, 2143744, 2170880, 2507776, 2539520, 2588672, 2595940, 2679680, 3134720, 3235840, 3364864, 4153504, 4206080, 4287488, 4341760, 5015552, 5079040, 5191880, 5359360, 6269440, 6471680, 6729728, 8307008, 8412160, 8574976, 8683520, 10031104, 10383760, 10718720, 12538880, 12943360, 13459456, 16614016, 16824320, 17149952, 20062208, 20767520, 21437440, 25077760, 26918912, 33228032, 33648640, 34299904, 40124416, 41535040, 42874880, 50155520, 53837824, 66456064, 67297280, 68599808, 80248832, 83070080, 85749760, 100311040, 132912128, 134594560, 137199616, 166140160, 171499520, 200622080, 265824256, 269189120, 332280320, 342999040, 401244160, 531648512, 664560640, 685998080, 1063297024, 1329121280, 2126594048, 2658242560, 4253188096, 5316485120, 10632970240, 21265940480]

約数ペア:

[(1, 21265940480), (2, 10632970240), (4, 5316485120), (5, 4253188096), (8, 2658242560), (10, 2126594048), (16, 1329121280), (20, 1063297024), (31, 685998080), (32, 664560640), (40, 531648512), (53, 401244160), (62, 342999040), (64, 332280320), (79, 269189120), (80, 265824256), (106, 200622080), (124, 171499520), (128, 166140160), (155, 137199616), (158, 134594560), (160, 132912128), (212, 100311040), (248, 85749760), (256, 83070080), (265, 80248832), (310, 68599808), (316, 67297280), (320, 66456064), (395, 53837824), (424, 50155520), (496, 42874880), (512, 41535040), (530, 40124416), (620, 34299904), (632, 33648640), (640, 33228032), (790, 26918912), (848, 25077760), (992, 21437440), (1024, 20767520), (1060, 20062208), (1240, 17149952), (1264, 16824320), (1280, 16614016), (1580, 13459456), (1643, 12943360), (1696, 12538880), (1984, 10718720), (2048, 10383760), (2120, 10031104), (2449, 8683520), (2480, 8574976), (2528, 8412160), (2560, 8307008), (3160, 6729728), (3286, 6471680), (3392, 6269440), (3968, 5359360), (4096, 5191880), (4187, 5079040), (4240, 5015552), (4898, 4341760), (4960, 4287488), (5056, 4206080), (5120, 4153504), (6320, 3364864), (6572, 3235840), (6784, 3134720), (7936, 2679680), (8192, 2595940), (8215, 2588672), (8374, 2539520), (8480, 2507776), (9796, 2170880), (9920, 2143744), (10112, 2103040), (10240, 2076752), (12245, 1736704), (12640, 1682432), (13144, 1617920), (13568, 1567360), (15872, 1339840), (16384, 1297970), (16430, 1294336), (16748, 1269760), (16960, 1253888), (19592, 1085440), (19840, 1071872), (20224, 1051520), (20480, 1038376), (20935, 1015808), (24490, 868352), (25280, 841216), (26288, 808960), (27136, 783680), (31744, 669920), (32768, 648985), (32860, 647168), (33496, 634880), (33920, 626944), (39184, 542720), (39680, 535936), (40448, 525760), (40960, 519188), (41870, 507904), (48980, 434176), (50560, 420608), (52576, 404480), (54272, 391840), (63488, 334960), (65720, 323584), (66992, 317440), (67840, 313472), (78368, 271360), (79360, 267968), (80896, 262880), (81920, 259594), (83740, 253952), (97960, 217088), (101120, 210304), (105152, 202240), (108544, 195920), (126976, 167480), (129797, 163840), (131440, 161792), (133984, 158720), (135680, 156736)]