21319887

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{379}}^1\times {\mathrm{1103}}^1$

素因数の和:1502

約数の個数: 16

約数和(自身を含む): 30205440

約数和(自身を除く): 8885553

約数列:

[1, 3, 17, 51, 379, 1103, 1137, 3309, 6443, 18751, 19329, 56253, 418037, 1254111, 7106629, 21319887]

約数ペア:

[(1, 21319887), (3, 7106629), (17, 1254111), (51, 418037), (379, 56253), (1103, 19329), (1137, 18751), (3309, 6443)]