211009175

素因数分解:

$5^2\times {\mathrm{13}}^2\times {\mathrm{49943}}^1$

素因数の和:49979

約数の個数: 18

約数和(自身を含む): 283332312

約数和(自身を除く): 72323137

約数列:

[1, 5, 13, 25, 65, 169, 325, 845, 4225, 49943, 249715, 649259, 1248575, 3246295, 8440367, 16231475, 42201835, 211009175]

約数ペア:

[(1, 211009175), (5, 42201835), (13, 16231475), (25, 8440367), (65, 3246295), (169, 1248575), (325, 649259), (845, 249715), (4225, 49943)]