20730775

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{227}}^1\times {\mathrm{281}}^1$

素因数の和:531

約数の個数: 24

約数和(自身を含む): 27904464

約数和(自身を除く): 7173689

約数列:

[1, 5, 13, 25, 65, 227, 281, 325, 1135, 1405, 2951, 3653, 5675, 7025, 14755, 18265, 63787, 73775, 91325, 318935, 829231, 1594675, 4146155, 20730775]

約数ペア:

[(1, 20730775), (5, 4146155), (13, 1594675), (25, 829231), (65, 318935), (227, 91325), (281, 73775), (325, 63787), (1135, 18265), (1405, 14755), (2951, 7025), (3653, 5675)]