21355025

素因数分解:

$5^2\times {\mathrm{53}}^1\times {\mathrm{71}}^1\times {\mathrm{227}}^1$

素因数の和:361

約数の個数: 24

約数和(自身を含む): 27480384

約数和(自身を除く): 6125359

約数列:

[1, 5, 25, 53, 71, 227, 265, 355, 1135, 1325, 1775, 3763, 5675, 12031, 16117, 18815, 60155, 80585, 94075, 300775, 402925, 854201, 4271005, 21355025]

約数ペア:

[(1, 21355025), (5, 4271005), (25, 854201), (53, 402925), (71, 300775), (227, 94075), (265, 80585), (355, 60155), (1135, 18815), (1325, 16117), (1775, 12031), (3763, 5675)]