11987275

素因数分解:

$5^2\times {\mathrm{53}}^1\times {\mathrm{83}}^1\times {\mathrm{109}}^1$

素因数の和:255

約数の個数: 24

約数和(自身を含む): 15467760

約数和(自身を除く): 3480485

約数列:

[1, 5, 25, 53, 83, 109, 265, 415, 545, 1325, 2075, 2725, 4399, 5777, 9047, 21995, 28885, 45235, 109975, 144425, 226175, 479491, 2397455, 11987275]

約数ペア:

[(1, 11987275), (5, 2397455), (25, 479491), (53, 226175), (83, 144425), (109, 109975), (265, 45235), (415, 28885), (545, 21995), (1325, 9047), (2075, 5777), (2725, 4399)]