720666723

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{491}}^1\times {\mathrm{1889}}^1$

素因数の和:2427

約数の個数: 32

約数和(自身を含む): 1130734080

約数和(自身を除く): 410067357

約数列:

[1, 3, 7, 21, 37, 111, 259, 491, 777, 1473, 1889, 3437, 5667, 10311, 13223, 18167, 39669, 54501, 69893, 127169, 209679, 381507, 489251, 927499, 1467753, 2782497, 6492493, 19477479, 34317463, 102952389, 240222241, 720666723]

約数ペア:

[(1, 720666723), (3, 240222241), (7, 102952389), (21, 34317463), (37, 19477479), (111, 6492493), (259, 2782497), (491, 1467753), (777, 927499), (1473, 489251), (1889, 381507), (3437, 209679), (5667, 127169), (10311, 69893), (13223, 54501), (18167, 39669)]