21956389

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{2711}}^1$

素因数の和:2820

約数の個数: 16

約数和(自身を含む): 27336960

約数和(自身を除く): 5380571

約数列:

[1, 7, 13, 89, 91, 623, 1157, 2711, 8099, 18977, 35243, 241279, 246701, 1688953, 3136627, 21956389]

約数ペア:

[(1, 21956389), (7, 3136627), (13, 1688953), (89, 246701), (91, 241279), (623, 35243), (1157, 18977), (2711, 8099)]