19906779

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{3581}}^1$

素因数の和:3710

約数の個数: 16

約数和(自身を含む): 28369440

約数和(自身を除く): 8462661

約数列:

[1, 3, 17, 51, 109, 327, 1853, 3581, 5559, 10743, 60877, 182631, 390329, 1170987, 6635593, 19906779]

約数ペア:

[(1, 19906779), (3, 6635593), (17, 1170987), (51, 390329), (109, 182631), (327, 60877), (1853, 10743), (3581, 5559)]