11997775

素因数分解:

$5^2\times {\mathrm{31}}^1\times {\mathrm{113}}^1\times {\mathrm{137}}^1$

素因数の和:291

約数の個数: 24

約数和(自身を含む): 15606144

約数和(自身を除く): 3608369

約数列:

[1, 5, 25, 31, 113, 137, 155, 565, 685, 775, 2825, 3425, 3503, 4247, 15481, 17515, 21235, 77405, 87575, 106175, 387025, 479911, 2399555, 11997775]

約数ペア:

[(1, 11997775), (5, 2399555), (25, 479911), (31, 387025), (113, 106175), (137, 87575), (155, 77405), (565, 21235), (685, 17515), (775, 15481), (2825, 4247), (3425, 3503)]