1999920

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{641}}^1$

素因数の和:670

約数の個数: 80

約数和(自身を含む): 6687072

約数和(自身を除く): 4687152

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 39, 40, 48, 52, 60, 65, 78, 80, 104, 120, 130, 156, 195, 208, 240, 260, 312, 390, 520, 624, 641, 780, 1040, 1282, 1560, 1923, 2564, 3120, 3205, 3846, 5128, 6410, 7692, 8333, 9615, 10256, 12820, 15384, 16666, 19230, 24999, 25640, 30768, 33332, 38460, 41665, 49998, 51280, 66664, 76920, 83330, 99996, 124995, 133328, 153840, 166660, 199992, 249990, 333320, 399984, 499980, 666640, 999960, 1999920]

約数ペア:

[(1, 1999920), (2, 999960), (3, 666640), (4, 499980), (5, 399984), (6, 333320), (8, 249990), (10, 199992), (12, 166660), (13, 153840), (15, 133328), (16, 124995), (20, 99996), (24, 83330), (26, 76920), (30, 66664), (39, 51280), (40, 49998), (48, 41665), (52, 38460), (60, 33332), (65, 30768), (78, 25640), (80, 24999), (104, 19230), (120, 16666), (130, 15384), (156, 12820), (195, 10256), (208, 9615), (240, 8333), (260, 7692), (312, 6410), (390, 5128), (520, 3846), (624, 3205), (641, 3120), (780, 2564), (1040, 1923), (1282, 1560)]