21780848

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{43913}}^1$

素因数の和:43952

約数の個数: 20

約数和(自身を含む): 43562688

約数和(自身を除く): 21781840

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 496, 43913, 87826, 175652, 351304, 702608, 1361303, 2722606, 5445212, 10890424, 21780848]

約数ペア:

[(1, 21780848), (2, 10890424), (4, 5445212), (8, 2722606), (16, 1361303), (31, 702608), (62, 351304), (124, 175652), (248, 87826), (496, 43913)]