31640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{113}}^1$

素因数の和:131

約数の個数: 32

約数和(自身を含む): 82080

約数和(自身を除く): 50440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 113, 140, 226, 280, 452, 565, 791, 904, 1130, 1582, 2260, 3164, 3955, 4520, 6328, 7910, 15820, 31640]

約数ペア:

[(1, 31640), (2, 15820), (4, 7910), (5, 6328), (7, 4520), (8, 3955), (10, 3164), (14, 2260), (20, 1582), (28, 1130), (35, 904), (40, 791), (56, 565), (70, 452), (113, 280), (140, 226)]