21103912

素因数分解:

$2^3\times {\mathrm{37}}^1\times {\mathrm{83}}^1\times {\mathrm{859}}^1$

素因数の和:985

約数の個数: 32

約数和(自身を含む): 41176800

約数和(自身を除く): 20072888

約数列:

[1, 2, 4, 8, 37, 74, 83, 148, 166, 296, 332, 664, 859, 1718, 3071, 3436, 6142, 6872, 12284, 24568, 31783, 63566, 71297, 127132, 142594, 254264, 285188, 570376, 2637989, 5275978, 10551956, 21103912]

約数ペア:

[(1, 21103912), (2, 10551956), (4, 5275978), (8, 2637989), (37, 570376), (74, 285188), (83, 254264), (148, 142594), (166, 127132), (296, 71297), (332, 63566), (664, 31783), (859, 24568), (1718, 12284), (3071, 6872), (3436, 6142)]