20119960

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{181}}^1\times {\mathrm{397}}^1$

素因数の和:596

約数の個数: 64

約数和(自身を含む): 52153920

約数和(自身を除く): 32033960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 181, 280, 362, 397, 724, 794, 905, 1267, 1448, 1588, 1810, 1985, 2534, 2779, 3176, 3620, 3970, 5068, 5558, 6335, 7240, 7940, 10136, 11116, 12670, 13895, 15880, 22232, 25340, 27790, 50680, 55580, 71857, 111160, 143714, 287428, 359285, 502999, 574856, 718570, 1005998, 1437140, 2011996, 2514995, 2874280, 4023992, 5029990, 10059980, 20119960]

約数ペア:

[(1, 20119960), (2, 10059980), (4, 5029990), (5, 4023992), (7, 2874280), (8, 2514995), (10, 2011996), (14, 1437140), (20, 1005998), (28, 718570), (35, 574856), (40, 502999), (56, 359285), (70, 287428), (140, 143714), (181, 111160), (280, 71857), (362, 55580), (397, 50680), (724, 27790), (794, 25340), (905, 22232), (1267, 15880), (1448, 13895), (1588, 12670), (1810, 11116), (1985, 10136), (2534, 7940), (2779, 7240), (3176, 6335), (3620, 5558), (3970, 5068)]