2021457920

素因数分解:

$2^{16}\times 5^1\times {\mathrm{31}}^1\times {\mathrm{199}}^1$

素因数の和:267

約数の個数: 136

約数和(自身を含む): 5033126400

約数和(自身を除く): 3011668480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 199, 248, 256, 310, 320, 398, 496, 512, 620, 640, 796, 992, 995, 1024, 1240, 1280, 1592, 1984, 1990, 2048, 2480, 2560, 3184, 3968, 3980, 4096, 4960, 5120, 6169, 6368, 7936, 7960, 8192, 9920, 10240, 12338, 12736, 15872, 15920, 16384, 19840, 20480, 24676, 25472, 30845, 31744, 31840, 32768, 39680, 40960, 49352, 50944, 61690, 63488, 63680, 65536, 79360, 81920, 98704, 101888, 123380, 126976, 127360, 158720, 163840, 197408, 203776, 246760, 253952, 254720, 317440, 327680, 394816, 407552, 493520, 507904, 509440, 634880, 789632, 815104, 987040, 1015808, 1018880, 1269760, 1579264, 1630208, 1974080, 2031616, 2037760, 2539520, 3158528, 3260416, 3948160, 4075520, 5079040, 6317056, 6520832, 7896320, 8151040, 10158080, 12634112, 13041664, 15792640, 16302080, 25268224, 31585280, 32604160, 50536448, 63170560, 65208320, 101072896, 126341120, 202145792, 252682240, 404291584, 505364480, 1010728960, 2021457920]

約数ペア:

[(1, 2021457920), (2, 1010728960), (4, 505364480), (5, 404291584), (8, 252682240), (10, 202145792), (16, 126341120), (20, 101072896), (31, 65208320), (32, 63170560), (40, 50536448), (62, 32604160), (64, 31585280), (80, 25268224), (124, 16302080), (128, 15792640), (155, 13041664), (160, 12634112), (199, 10158080), (248, 8151040), (256, 7896320), (310, 6520832), (320, 6317056), (398, 5079040), (496, 4075520), (512, 3948160), (620, 3260416), (640, 3158528), (796, 2539520), (992, 2037760), (995, 2031616), (1024, 1974080), (1240, 1630208), (1280, 1579264), (1592, 1269760), (1984, 1018880), (1990, 1015808), (2048, 987040), (2480, 815104), (2560, 789632), (3184, 634880), (3968, 509440), (3980, 507904), (4096, 493520), (4960, 407552), (5120, 394816), (6169, 327680), (6368, 317440), (7936, 254720), (7960, 253952), (8192, 246760), (9920, 203776), (10240, 197408), (12338, 163840), (12736, 158720), (15872, 127360), (15920, 126976), (16384, 123380), (19840, 101888), (20480, 98704), (24676, 81920), (25472, 79360), (30845, 65536), (31744, 63680), (31840, 63488), (32768, 61690), (39680, 50944), (40960, 49352)]