21186715

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{569}}^1\times {\mathrm{677}}^1$

素因数の和:1262

約数の個数: 16

約数和(自身を含む): 27825120

約数和(自身を除く): 6638405

約数列:

[1, 5, 11, 55, 569, 677, 2845, 3385, 6259, 7447, 31295, 37235, 385213, 1926065, 4237343, 21186715]

約数ペア:

[(1, 21186715), (5, 4237343), (11, 1926065), (55, 385213), (569, 37235), (677, 31295), (2845, 7447), (3385, 6259)]