20989312

素因数分解:

$2^7\times {\mathrm{163979}}^1$

素因数の和:163993

約数の個数: 16

約数和(自身を含む): 41814900

約数和(自身を除く): 20825588

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 163979, 327958, 655916, 1311832, 2623664, 5247328, 10494656, 20989312]

約数ペア:

[(1, 20989312), (2, 10494656), (4, 5247328), (8, 2623664), (16, 1311832), (32, 655916), (64, 327958), (128, 163979)]