20215760

素因数分解:

$2^4\times 5^1\times {\mathrm{59}}^1\times {\mathrm{4283}}^1$

素因数の和:4355

約数の個数: 40

約数和(自身を含む): 47809440

約数和(自身を除く): 27593680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 59, 80, 118, 236, 295, 472, 590, 944, 1180, 2360, 4283, 4720, 8566, 17132, 21415, 34264, 42830, 68528, 85660, 171320, 252697, 342640, 505394, 1010788, 1263485, 2021576, 2526970, 4043152, 5053940, 10107880, 20215760]

約数ペア:

[(1, 20215760), (2, 10107880), (4, 5053940), (5, 4043152), (8, 2526970), (10, 2021576), (16, 1263485), (20, 1010788), (40, 505394), (59, 342640), (80, 252697), (118, 171320), (236, 85660), (295, 68528), (472, 42830), (590, 34264), (944, 21415), (1180, 17132), (2360, 8566), (4283, 4720)]