21170525

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{457}}^1$

素因数の和:593

約数の個数: 24

約数和(自身を含む): 28112040

約数和(自身を除く): 6941515

約数列:

[1, 5, 17, 25, 85, 109, 425, 457, 545, 1853, 2285, 2725, 7769, 9265, 11425, 38845, 46325, 49813, 194225, 249065, 846821, 1245325, 4234105, 21170525]

約数ペア:

[(1, 21170525), (5, 4234105), (17, 1245325), (25, 846821), (85, 249065), (109, 194225), (425, 49813), (457, 46325), (545, 38845), (1853, 11425), (2285, 9265), (2725, 7769)]