20629680

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{1999}}^1$

素因数の和:2058

約数の個数: 80

約数和(自身を含む): 65472000

約数和(自身を除く): 44842320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 43, 48, 60, 80, 86, 120, 129, 172, 215, 240, 258, 344, 430, 516, 645, 688, 860, 1032, 1290, 1720, 1999, 2064, 2580, 3440, 3998, 5160, 5997, 7996, 9995, 10320, 11994, 15992, 19990, 23988, 29985, 31984, 39980, 47976, 59970, 79960, 85957, 95952, 119940, 159920, 171914, 239880, 257871, 343828, 429785, 479760, 515742, 687656, 859570, 1031484, 1289355, 1375312, 1719140, 2062968, 2578710, 3438280, 4125936, 5157420, 6876560, 10314840, 20629680]

約数ペア:

[(1, 20629680), (2, 10314840), (3, 6876560), (4, 5157420), (5, 4125936), (6, 3438280), (8, 2578710), (10, 2062968), (12, 1719140), (15, 1375312), (16, 1289355), (20, 1031484), (24, 859570), (30, 687656), (40, 515742), (43, 479760), (48, 429785), (60, 343828), (80, 257871), (86, 239880), (120, 171914), (129, 159920), (172, 119940), (215, 95952), (240, 85957), (258, 79960), (344, 59970), (430, 47976), (516, 39980), (645, 31984), (688, 29985), (860, 23988), (1032, 19990), (1290, 15992), (1720, 11994), (1999, 10320), (2064, 9995), (2580, 7996), (3440, 5997), (3998, 5160)]