31891923

素因数分解:

$3^2\times 7^1\times {\mathrm{491}}^1\times {\mathrm{1031}}^1$

素因数の和:1535

約数の個数: 24

約数和(自身を含む): 52805376

約数和(自身を除く): 20913453

約数列:

[1, 3, 7, 9, 21, 63, 491, 1031, 1473, 3093, 3437, 4419, 7217, 9279, 10311, 21651, 30933, 64953, 506221, 1518663, 3543547, 4555989, 10630641, 31891923]

約数ペア:

[(1, 31891923), (3, 10630641), (7, 4555989), (9, 3543547), (21, 1518663), (63, 506221), (491, 64953), (1031, 30933), (1473, 21651), (3093, 10311), (3437, 9279), (4419, 7217)]