20540920

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{13879}}^1$

素因数の和:13927

約数の個数: 32

約数和(自身を含む): 47469600

約数和(自身を除く): 26928680

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 148, 185, 296, 370, 740, 1480, 13879, 27758, 55516, 69395, 111032, 138790, 277580, 513523, 555160, 1027046, 2054092, 2567615, 4108184, 5135230, 10270460, 20540920]

約数ペア:

[(1, 20540920), (2, 10270460), (4, 5135230), (5, 4108184), (8, 2567615), (10, 2054092), (20, 1027046), (37, 555160), (40, 513523), (74, 277580), (148, 138790), (185, 111032), (296, 69395), (370, 55516), (740, 27758), (1480, 13879)]