21151175

素因数分解:

$5^2\times {\mathrm{47}}^2\times {\mathrm{383}}^1$

素因数の和:487

約数の個数: 18

約数和(自身を含む): 26867328

約数和(自身を除く): 5716153

約数列:

[1, 5, 25, 47, 235, 383, 1175, 1915, 2209, 9575, 11045, 18001, 55225, 90005, 450025, 846047, 4230235, 21151175]

約数ペア:

[(1, 21151175), (5, 4230235), (25, 846047), (47, 450025), (235, 90005), (383, 55225), (1175, 18001), (1915, 11045), (2209, 9575)]