21688876

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{641}}^1\times {\mathrm{769}}^1$

素因数の和:1425

約数の個数: 24

約数和(自身を含む): 41524560

約数和(自身を除く): 19835684

約数列:

[1, 2, 4, 11, 22, 44, 641, 769, 1282, 1538, 2564, 3076, 7051, 8459, 14102, 16918, 28204, 33836, 492929, 985858, 1971716, 5422219, 10844438, 21688876]

約数ペア:

[(1, 21688876), (2, 10844438), (4, 5422219), (11, 1971716), (22, 985858), (44, 492929), (641, 33836), (769, 28204), (1282, 16918), (1538, 14102), (2564, 8459), (3076, 7051)]