1311138740

素因数分解:

$2^2\times 5^1\times {\mathrm{7907}}^1\times {\mathrm{8291}}^1$

素因数の和:16207

約数の個数: 24

約数和(自身を含む): 2754071712

約数和(自身を除く): 1442932972

約数列:

[1, 2, 4, 5, 10, 20, 7907, 8291, 15814, 16582, 31628, 33164, 39535, 41455, 79070, 82910, 158140, 165820, 65556937, 131113874, 262227748, 327784685, 655569370, 1311138740]

約数ペア:

[(1, 1311138740), (2, 655569370), (4, 327784685), (5, 262227748), (10, 131113874), (20, 65556937), (7907, 165820), (8291, 158140), (15814, 82910), (16582, 79070), (31628, 41455), (33164, 39535)]