20720618240

素因数分解:

$2^8\times 5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{10657}}^1$

素因数の和:10723

約数の個数: 216

約数和(自身を含む): 59603628672

約数和(自身を除く): 38883010432

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 32, 35, 40, 49, 56, 62, 64, 70, 80, 98, 112, 124, 128, 140, 155, 160, 196, 217, 224, 245, 248, 256, 280, 310, 320, 392, 434, 448, 490, 496, 560, 620, 640, 784, 868, 896, 980, 992, 1085, 1120, 1240, 1280, 1519, 1568, 1736, 1792, 1960, 1984, 2170, 2240, 2480, 3038, 3136, 3472, 3920, 3968, 4340, 4480, 4960, 6076, 6272, 6944, 7595, 7840, 7936, 8680, 8960, 9920, 10657, 12152, 12544, 13888, 15190, 15680, 17360, 19840, 21314, 24304, 27776, 30380, 31360, 34720, 39680, 42628, 48608, 53285, 55552, 60760, 62720, 69440, 74599, 85256, 97216, 106570, 121520, 138880, 149198, 170512, 194432, 213140, 243040, 277760, 298396, 330367, 341024, 372995, 388864, 426280, 486080, 522193, 596792, 660734, 682048, 745990, 852560, 972160, 1044386, 1193584, 1321468, 1364096, 1491980, 1651835, 1705120, 1944320, 2088772, 2312569, 2387168, 2610965, 2642936, 2728192, 2983960, 3303670, 3410240, 4177544, 4625138, 4774336, 5221930, 5285872, 5967920, 6607340, 6820480, 8355088, 9250276, 9548672, 10443860, 10571744, 11562845, 11935840, 13214680, 13640960, 16187983, 16710176, 18500552, 19097344, 20887720, 21143488, 23125690, 23871680, 26429360, 32375966, 33420352, 37001104, 41775440, 42286976, 46251380, 47743360, 52858720, 64751932, 66840704, 74002208, 80939915, 83550880, 84573952, 92502760, 95486720, 105717440, 129503864, 133681408, 148004416, 161879830, 167101760, 185005520, 211434880, 259007728, 296008832, 323759660, 334203520, 370011040, 422869760, 518015456, 592017664, 647519320, 668407040, 740022080, 1036030912, 1295038640, 1480044160, 2072061824, 2590077280, 2960088320, 4144123648, 5180154560, 10360309120, 20720618240]

約数ペア:

[(1, 20720618240), (2, 10360309120), (4, 5180154560), (5, 4144123648), (7, 2960088320), (8, 2590077280), (10, 2072061824), (14, 1480044160), (16, 1295038640), (20, 1036030912), (28, 740022080), (31, 668407040), (32, 647519320), (35, 592017664), (40, 518015456), (49, 422869760), (56, 370011040), (62, 334203520), (64, 323759660), (70, 296008832), (80, 259007728), (98, 211434880), (112, 185005520), (124, 167101760), (128, 161879830), (140, 148004416), (155, 133681408), (160, 129503864), (196, 105717440), (217, 95486720), (224, 92502760), (245, 84573952), (248, 83550880), (256, 80939915), (280, 74002208), (310, 66840704), (320, 64751932), (392, 52858720), (434, 47743360), (448, 46251380), (490, 42286976), (496, 41775440), (560, 37001104), (620, 33420352), (640, 32375966), (784, 26429360), (868, 23871680), (896, 23125690), (980, 21143488), (992, 20887720), (1085, 19097344), (1120, 18500552), (1240, 16710176), (1280, 16187983), (1519, 13640960), (1568, 13214680), (1736, 11935840), (1792, 11562845), (1960, 10571744), (1984, 10443860), (2170, 9548672), (2240, 9250276), (2480, 8355088), (3038, 6820480), (3136, 6607340), (3472, 5967920), (3920, 5285872), (3968, 5221930), (4340, 4774336), (4480, 4625138), (4960, 4177544), (6076, 3410240), (6272, 3303670), (6944, 2983960), (7595, 2728192), (7840, 2642936), (7936, 2610965), (8680, 2387168), (8960, 2312569), (9920, 2088772), (10657, 1944320), (12152, 1705120), (12544, 1651835), (13888, 1491980), (15190, 1364096), (15680, 1321468), (17360, 1193584), (19840, 1044386), (21314, 972160), (24304, 852560), (27776, 745990), (30380, 682048), (31360, 660734), (34720, 596792), (39680, 522193), (42628, 486080), (48608, 426280), (53285, 388864), (55552, 372995), (60760, 341024), (62720, 330367), (69440, 298396), (74599, 277760), (85256, 243040), (97216, 213140), (106570, 194432), (121520, 170512), (138880, 149198)]