21307408

素因数分解:

$2^4\times {\mathrm{97}}^1\times {\mathrm{13729}}^1$

素因数の和:13834

約数の個数: 20

約数和(自身を含む): 41711740

約数和(自身を除く): 20404332

約数列:

[1, 2, 4, 8, 16, 97, 194, 388, 776, 1552, 13729, 27458, 54916, 109832, 219664, 1331713, 2663426, 5326852, 10653704, 21307408]

約数ペア:

[(1, 21307408), (2, 10653704), (4, 5326852), (8, 2663426), (16, 1331713), (97, 219664), (194, 109832), (388, 54916), (776, 27458), (1552, 13729)]