21683444

素因数分解:

$2^2\times {\mathrm{59}}^1\times {\mathrm{139}}^1\times {\mathrm{661}}^1$

素因数の和:863

約数の個数: 24

約数和(自身を含む): 38925600

約数和(自身を除く): 17242156

約数列:

[1, 2, 4, 59, 118, 139, 236, 278, 556, 661, 1322, 2644, 8201, 16402, 32804, 38999, 77998, 91879, 155996, 183758, 367516, 5420861, 10841722, 21683444]

約数ペア:

[(1, 21683444), (2, 10841722), (4, 5420861), (59, 367516), (118, 183758), (139, 155996), (236, 91879), (278, 77998), (556, 38999), (661, 32804), (1322, 16402), (2644, 8201)]