21778490

素因数分解:

$2^1\times 5^1\times {\mathrm{113}}^1\times {\mathrm{19273}}^1$

素因数の和:19393

約数の個数: 16

約数和(自身を含む): 39550248

約数和(自身を除く): 17771758

約数列:

[1, 2, 5, 10, 113, 226, 565, 1130, 19273, 38546, 96365, 192730, 2177849, 4355698, 10889245, 21778490]

約数ペア:

[(1, 21778490), (2, 10889245), (5, 4355698), (10, 2177849), (113, 192730), (226, 96365), (565, 38546), (1130, 19273)]