1640973817

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{617}}^1\times {\mathrm{19997}}^1$

素因数の和:20640

約数の個数: 16

約数和(自身を含む): 1977402240

約数和(自身を除く): 336428423

約数列:

[1, 7, 19, 133, 617, 4319, 11723, 19997, 82061, 139979, 379943, 2659601, 12338149, 86367043, 234424831, 1640973817]

約数ペア:

[(1, 1640973817), (7, 234424831), (19, 86367043), (133, 12338149), (617, 2659601), (4319, 379943), (11723, 139979), (19997, 82061)]