21785075

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{3943}}^1$

素因数の和:3983

約数の個数: 24

約数和(自身を含む): 30810528

約数和(自身を除く): 9025453

約数列:

[1, 5, 13, 17, 25, 65, 85, 221, 325, 425, 1105, 3943, 5525, 19715, 51259, 67031, 98575, 256295, 335155, 871403, 1281475, 1675775, 4357015, 21785075]

約数ペア:

[(1, 21785075), (5, 4357015), (13, 1675775), (17, 1281475), (25, 871403), (65, 335155), (85, 256295), (221, 98575), (325, 67031), (425, 51259), (1105, 19715), (3943, 5525)]