21089677

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{257}}^1\times {\mathrm{617}}^1$

素因数の和:900

約数の個数: 16

約数和(自身を含む): 25511040

約数和(自身を除く): 4421363

約数列:

[1, 7, 19, 133, 257, 617, 1799, 4319, 4883, 11723, 34181, 82061, 158569, 1109983, 3012811, 21089677]

約数ペア:

[(1, 21089677), (7, 3012811), (19, 1109983), (133, 158569), (257, 82061), (617, 34181), (1799, 11723), (4319, 4883)]