18689918

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{10729}}^1$

素因数の和:10811

約数の個数: 16

約数和(自身を含む): 30644880

約数和(自身を除く): 11954962

約数列:

[1, 2, 13, 26, 67, 134, 871, 1742, 10729, 21458, 139477, 278954, 718843, 1437686, 9344959, 18689918]

約数ペア:

[(1, 18689918), (2, 9344959), (13, 1437686), (26, 718843), (67, 278954), (134, 139477), (871, 21458), (1742, 10729)]