21347888

素因数分解:

$2^4\times {\mathrm{137}}^1\times {\mathrm{9739}}^1$

素因数の和:9884

約数の個数: 20

約数和(自身を含む): 41667720

約数和(自身を除く): 20319832

約数列:

[1, 2, 4, 8, 16, 137, 274, 548, 1096, 2192, 9739, 19478, 38956, 77912, 155824, 1334243, 2668486, 5336972, 10673944, 21347888]

約数ペア:

[(1, 21347888), (2, 10673944), (4, 5336972), (8, 2668486), (16, 1334243), (137, 155824), (274, 77912), (548, 38956), (1096, 19478), (2192, 9739)]