20542815

素因数分解:

$3^4\times 5^1\times {\mathrm{50723}}^1$

素因数の和:50740

約数の個数: 20

約数和(自身を含む): 36825624

約数和(自身を除く): 16282809

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 50723, 152169, 253615, 456507, 760845, 1369521, 2282535, 4108563, 6847605, 20542815]

約数ペア:

[(1, 20542815), (3, 6847605), (5, 4108563), (9, 2282535), (15, 1369521), (27, 760845), (45, 456507), (81, 253615), (135, 152169), (405, 50723)]