20698340

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79609}}^1$

素因数の和:79631

約数の個数: 24

約数和(自身を含む): 46810680

約数和(自身を除く): 26112340

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 79609, 159218, 318436, 398045, 796090, 1034917, 1592180, 2069834, 4139668, 5174585, 10349170, 20698340]

約数ペア:

[(1, 20698340), (2, 10349170), (4, 5174585), (5, 4139668), (10, 2069834), (13, 1592180), (20, 1034917), (26, 796090), (52, 398045), (65, 318436), (130, 159218), (260, 79609)]