20609040

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{1997}}^1$

素因数の和:2056

約数の個数: 80

約数和(自身を含む): 65406528

約数和(自身を除く): 44797488

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, 1997, 2064, 2580, 3440, 3994, 5160, 5991, 7988, 9985, 10320, 11982, 15976, 19970, 23964, 29955, 31952, 39940, 47928, 59910, 79880, 85871, 95856, 119820, 159760, 171742, 239640, 257613, 343484, 429355, 479280, 515226, 686968, 858710, 1030452, 1288065, 1373936, 1717420, 2060904, 2576130, 3434840, 4121808, 5152260, 6869680, 10304520, 20609040]

約数ペア:

[(1, 20609040), (2, 10304520), (3, 6869680), (4, 5152260), (5, 4121808), (6, 3434840), (8, 2576130), (10, 2060904), (12, 1717420), (15, 1373936), (16, 1288065), (20, 1030452), (24, 858710), (30, 686968), (40, 515226), (43, 479280), (48, 429355), (60, 343484), (80, 257613), (86, 239640), (120, 171742), (129, 159760), (172, 119820), (215, 95856), (240, 85871), (258, 79880), (344, 59910), (430, 47928), (516, 39940), (645, 31952), (688, 29955), (860, 23964), (1032, 19970), (1290, 15976), (1720, 11982), (1997, 10320), (2064, 9985), (2580, 7988), (3440, 5991), (3994, 5160)]