21580784

素因数分解:

$2^4\times {\mathrm{59}}^1\times {\mathrm{22861}}^1$

素因数の和:22928

約数の個数: 20

約数和(自身を含む): 42523320

約数和(自身を除く): 20942536

約数列:

[1, 2, 4, 8, 16, 59, 118, 236, 472, 944, 22861, 45722, 91444, 182888, 365776, 1348799, 2697598, 5395196, 10790392, 21580784]

約数ペア:

[(1, 21580784), (2, 10790392), (4, 5395196), (8, 2697598), (16, 1348799), (59, 365776), (118, 182888), (236, 91444), (472, 45722), (944, 22861)]