21086416

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{101377}}^1$

素因数の和:101398

約数の個数: 20

約数和(自身を含む): 43998052

約数和(自身を除く): 22911636

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 101377, 202754, 405508, 811016, 1317901, 1622032, 2635802, 5271604, 10543208, 21086416]

約数ペア:

[(1, 21086416), (2, 10543208), (4, 5271604), (8, 2635802), (13, 1622032), (16, 1317901), (26, 811016), (52, 405508), (104, 202754), (208, 101377)]