19665404

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{41}}^1\times {\mathrm{991}}^1$

素因数の和:1058

約数の個数: 36

約数和(自身を含む): 38789184

約数和(自身を除く): 19123780

約数列:

[1, 2, 4, 11, 22, 41, 44, 82, 121, 164, 242, 451, 484, 902, 991, 1804, 1982, 3964, 4961, 9922, 10901, 19844, 21802, 40631, 43604, 81262, 119911, 162524, 239822, 446941, 479644, 893882, 1787764, 4916351, 9832702, 19665404]

約数ペア:

[(1, 19665404), (2, 9832702), (4, 4916351), (11, 1787764), (22, 893882), (41, 479644), (44, 446941), (82, 239822), (121, 162524), (164, 119911), (242, 81262), (451, 43604), (484, 40631), (902, 21802), (991, 19844), (1804, 10901), (1982, 9922), (3964, 4961)]