20828367

素因数分解:

$3^3\times 7^1\times {\mathrm{193}}^1\times {\mathrm{571}}^1$

素因数の和:780

約数の個数: 32

約数和(自身を含む): 35509760

約数和(自身を除く): 14681393

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 193, 571, 579, 1351, 1713, 1737, 3997, 4053, 5139, 5211, 11991, 12159, 15417, 35973, 36477, 107919, 110203, 330609, 771421, 991827, 2314263, 2975481, 6942789, 20828367]

約数ペア:

[(1, 20828367), (3, 6942789), (7, 2975481), (9, 2314263), (21, 991827), (27, 771421), (63, 330609), (189, 110203), (193, 107919), (571, 36477), (579, 35973), (1351, 15417), (1713, 12159), (1737, 11991), (3997, 5211), (4053, 5139)]