401068665

素因数分解:

$3^4\times 5^1\times {\mathrm{990293}}^1$

素因数の和:990310

約数の個数: 20

約数和(自身を含む): 718953444

約数和(自身を除く): 317884779

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 990293, 2970879, 4951465, 8912637, 14854395, 26737911, 44563185, 80213733, 133689555, 401068665]

約数ペア:

[(1, 401068665), (3, 133689555), (5, 80213733), (9, 44563185), (15, 26737911), (27, 14854395), (45, 8912637), (81, 4951465), (135, 2970879), (405, 990293)]