21858459

素因数分解:

$3^1\times 7^2\times {\mathrm{241}}^1\times {\mathrm{617}}^1$

素因数の和:875

約数の個数: 24

約数和(自身を含む): 34098768

約数和(自身を除く): 12240309

約数列:

[1, 3, 7, 21, 49, 147, 241, 617, 723, 1687, 1851, 4319, 5061, 11809, 12957, 30233, 35427, 90699, 148697, 446091, 1040879, 3122637, 7286153, 21858459]

約数ペア:

[(1, 21858459), (3, 7286153), (7, 3122637), (21, 1040879), (49, 446091), (147, 148697), (241, 90699), (617, 35427), (723, 30233), (1687, 12957), (1851, 11809), (4319, 5061)]