21101128

素因数分解:

$2^3\times {\mathrm{409}}^1\times {\mathrm{6449}}^1$

素因数の和:6864

約数の個数: 16

約数和(自身を含む): 39667500

約数和(自身を除く): 18566372

約数列:

[1, 2, 4, 8, 409, 818, 1636, 3272, 6449, 12898, 25796, 51592, 2637641, 5275282, 10550564, 21101128]

約数ペア:

[(1, 21101128), (2, 10550564), (4, 5275282), (8, 2637641), (409, 51592), (818, 25796), (1636, 12898), (3272, 6449)]