21750404

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{6857}}^1$

素因数の和:6935

約数の個数: 24

約数和(自身を含む): 41669208

約数和(自身を除く): 19918804

約数列:

[1, 2, 4, 13, 26, 52, 61, 122, 244, 793, 1586, 3172, 6857, 13714, 27428, 89141, 178282, 356564, 418277, 836554, 1673108, 5437601, 10875202, 21750404]

約数ペア:

[(1, 21750404), (2, 10875202), (4, 5437601), (13, 1673108), (26, 836554), (52, 418277), (61, 356564), (122, 178282), (244, 89141), (793, 27428), (1586, 13714), (3172, 6857)]