205485

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1$

素因数の和:137

約数の個数: 32

約数和(自身を含む): 399360

約数和(自身を除く): 193875

約数列:

[1, 3, 5, 7, 15, 19, 21, 35, 57, 95, 103, 105, 133, 285, 309, 399, 515, 665, 721, 1545, 1957, 1995, 2163, 3605, 5871, 9785, 10815, 13699, 29355, 41097, 68495, 205485]

約数ペア:

[(1, 205485), (3, 68495), (5, 41097), (7, 29355), (15, 13699), (19, 10815), (21, 9785), (35, 5871), (57, 3605), (95, 2163), (103, 1995), (105, 1957), (133, 1545), (285, 721), (309, 665), (399, 515)]