21266990

素因数分解:

$2^1\times 5^1\times {\mathrm{109}}^2\times {\mathrm{179}}^1$

素因数の和:404

約数の個数: 24

約数和(自身を含む): 38850840

約数和(自身を除く): 17583850

約数列:

[1, 2, 5, 10, 109, 179, 218, 358, 545, 895, 1090, 1790, 11881, 19511, 23762, 39022, 59405, 97555, 118810, 195110, 2126699, 4253398, 10633495, 21266990]

約数ペア:

[(1, 21266990), (2, 10633495), (5, 4253398), (10, 2126699), (109, 195110), (179, 118810), (218, 97555), (358, 59405), (545, 39022), (895, 23762), (1090, 19511), (1790, 11881)]