721000521

素因数分解:

$3^4\times {\mathrm{1429}}^1\times {\mathrm{6229}}^1$

素因数の和:7670

約数の個数: 20

約数和(自身を含む): 1077976900

約数和(自身を除く): 356976379

約数列:

[1, 3, 9, 27, 81, 1429, 4287, 6229, 12861, 18687, 38583, 56061, 115749, 168183, 504549, 8901241, 26703723, 80111169, 240333507, 721000521]

約数ペア:

[(1, 721000521), (3, 240333507), (9, 80111169), (27, 26703723), (81, 8901241), (1429, 504549), (4287, 168183), (6229, 115749), (12861, 56061), (18687, 38583)]