9989020

素因数分解:

$2^2\times 5^1\times {\mathrm{173}}^1\times {\mathrm{2887}}^1$

素因数の和:3069

約数の個数: 24

約数和(自身を含む): 21105504

約数和(自身を除く): 11116484

約数列:

[1, 2, 4, 5, 10, 20, 173, 346, 692, 865, 1730, 2887, 3460, 5774, 11548, 14435, 28870, 57740, 499451, 998902, 1997804, 2497255, 4994510, 9989020]

約数ペア:

[(1, 9989020), (2, 4994510), (4, 2497255), (5, 1997804), (10, 998902), (20, 499451), (173, 57740), (346, 28870), (692, 14435), (865, 11548), (1730, 5774), (2887, 3460)]