21541325

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{839}}^1$

素因数の和:941

約数の個数: 24

約数和(自身を含む): 29164800

約数和(自身を除く): 7623475

約数列:

[1, 5, 13, 25, 65, 79, 325, 395, 839, 1027, 1975, 4195, 5135, 10907, 20975, 25675, 54535, 66281, 272675, 331405, 861653, 1657025, 4308265, 21541325]

約数ペア:

[(1, 21541325), (5, 4308265), (13, 1657025), (25, 861653), (65, 331405), (79, 272675), (325, 66281), (395, 54535), (839, 25675), (1027, 20975), (1975, 10907), (4195, 5135)]