20025840

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{181}}^1\times {\mathrm{461}}^1$

素因数の和:658

約数の個数: 80

約数和(自身を含む): 62558496

約数和(自身を除く): 42532656

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 181, 240, 362, 461, 543, 724, 905, 922, 1086, 1383, 1448, 1810, 1844, 2172, 2305, 2715, 2766, 2896, 3620, 3688, 4344, 4610, 5430, 5532, 6915, 7240, 7376, 8688, 9220, 10860, 11064, 13830, 14480, 18440, 21720, 22128, 27660, 36880, 43440, 55320, 83441, 110640, 166882, 250323, 333764, 417205, 500646, 667528, 834410, 1001292, 1251615, 1335056, 1668820, 2002584, 2503230, 3337640, 4005168, 5006460, 6675280, 10012920, 20025840]

約数ペア:

[(1, 20025840), (2, 10012920), (3, 6675280), (4, 5006460), (5, 4005168), (6, 3337640), (8, 2503230), (10, 2002584), (12, 1668820), (15, 1335056), (16, 1251615), (20, 1001292), (24, 834410), (30, 667528), (40, 500646), (48, 417205), (60, 333764), (80, 250323), (120, 166882), (181, 110640), (240, 83441), (362, 55320), (461, 43440), (543, 36880), (724, 27660), (905, 22128), (922, 21720), (1086, 18440), (1383, 14480), (1448, 13830), (1810, 11064), (1844, 10860), (2172, 9220), (2305, 8688), (2715, 7376), (2766, 7240), (2896, 6915), (3620, 5532), (3688, 5430), (4344, 4610)]