21101212

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{719}}^1$

素因数の和:786

約数の個数: 48

約数和(自身を含む): 43545600

約数和(自身を除く): 22444388

約数列:

[1, 2, 4, 11, 22, 23, 29, 44, 46, 58, 92, 116, 253, 319, 506, 638, 667, 719, 1012, 1276, 1334, 1438, 2668, 2876, 7337, 7909, 14674, 15818, 16537, 20851, 29348, 31636, 33074, 41702, 66148, 83404, 181907, 229361, 363814, 458722, 479573, 727628, 917444, 959146, 1918292, 5275303, 10550606, 21101212]

約数ペア:

[(1, 21101212), (2, 10550606), (4, 5275303), (11, 1918292), (22, 959146), (23, 917444), (29, 727628), (44, 479573), (46, 458722), (58, 363814), (92, 229361), (116, 181907), (253, 83404), (319, 66148), (506, 41702), (638, 33074), (667, 31636), (719, 29348), (1012, 20851), (1276, 16537), (1334, 15818), (1438, 14674), (2668, 7909), (2876, 7337)]