21564964

素因数分解:

$2^2\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{2851}}^1$

素因数の和:2947

約数の個数: 24

約数和(自身を含む): 39608576

約数和(自身を除く): 18043612

約数列:

[1, 2, 4, 31, 61, 62, 122, 124, 244, 1891, 2851, 3782, 5702, 7564, 11404, 88381, 173911, 176762, 347822, 353524, 695644, 5391241, 10782482, 21564964]

約数ペア:

[(1, 21564964), (2, 10782482), (4, 5391241), (31, 695644), (61, 353524), (62, 347822), (122, 176762), (124, 173911), (244, 88381), (1891, 11404), (2851, 7564), (3782, 5702)]