21340916

素因数分解:

$2^2\times {\mathrm{17}}^2\times {\mathrm{18461}}^1$

素因数の和:18499

約数の個数: 18

約数和(自身を含む): 39674838

約数和(自身を除く): 18333922

約数列:

[1, 2, 4, 17, 34, 68, 289, 578, 1156, 18461, 36922, 73844, 313837, 627674, 1255348, 5335229, 10670458, 21340916]

約数ペア:

[(1, 21340916), (2, 10670458), (4, 5335229), (17, 1255348), (34, 627674), (68, 313837), (289, 73844), (578, 36922), (1156, 18461)]