401080815

素因数分解:

$3^4\times 5^1\times {\mathrm{990323}}^1$

素因数の和:990340

約数の個数: 20

約数和(自身を含む): 718975224

約数和(自身を除く): 317894409

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 990323, 2970969, 4951615, 8912907, 14854845, 26738721, 44564535, 80216163, 133693605, 401080815]

約数ペア:

[(1, 401080815), (3, 133693605), (5, 80216163), (9, 44564535), (15, 26738721), (27, 14854845), (45, 8912907), (81, 4951615), (135, 2970969), (405, 990323)]