21715696

素因数分解:

$2^4\times {\mathrm{103}}^1\times {\mathrm{13177}}^1$

素因数の和:13288

約数の個数: 20

約数和(自身を含む): 42485872

約数和(自身を除く): 20770176

約数列:

[1, 2, 4, 8, 16, 103, 206, 412, 824, 1648, 13177, 26354, 52708, 105416, 210832, 1357231, 2714462, 5428924, 10857848, 21715696]

約数ペア:

[(1, 21715696), (2, 10857848), (4, 5428924), (8, 2714462), (16, 1357231), (103, 210832), (206, 105416), (412, 52708), (824, 26354), (1648, 13177)]