21701690

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{127657}}^1$

素因数の和:127681

約数の個数: 16

約数和(自身を含む): 41361192

約数和(自身を除く): 19659502

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 127657, 255314, 638285, 1276570, 2170169, 4340338, 10850845, 21701690]

約数ペア:

[(1, 21701690), (2, 10850845), (5, 4340338), (10, 2170169), (17, 1276570), (34, 638285), (85, 255314), (170, 127657)]