21321225

素因数分解:

$3^4\times 5^2\times {\mathrm{10529}}^1$

素因数の和:10551

約数の個数: 30

約数和(自身を含む): 39498030

約数和(自身を除く): 18176805

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 81, 135, 225, 405, 675, 2025, 10529, 31587, 52645, 94761, 157935, 263225, 284283, 473805, 789675, 852849, 1421415, 2369025, 4264245, 7107075, 21321225]

約数ペア:

[(1, 21321225), (3, 7107075), (5, 4264245), (9, 2369025), (15, 1421415), (25, 852849), (27, 789675), (45, 473805), (75, 284283), (81, 263225), (135, 157935), (225, 94761), (405, 52645), (675, 31587), (2025, 10529)]