21204808

素因数分解:

$2^3\times {\mathrm{977}}^1\times {\mathrm{2713}}^1$

素因数の和:3696

約数の個数: 16

約数和(自身を含む): 39814380

約数和(自身を除く): 18609572

約数列:

[1, 2, 4, 8, 977, 1954, 2713, 3908, 5426, 7816, 10852, 21704, 2650601, 5301202, 10602404, 21204808]

約数ペア:

[(1, 21204808), (2, 10602404), (4, 5301202), (8, 2650601), (977, 21704), (1954, 10852), (2713, 7816), (3908, 5426)]