31355240

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{113}}^1\times {\mathrm{991}}^1$

素因数の和:1122

約数の個数: 64

約数和(自身を含む): 81423360

約数和(自身を除く): 50068120

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, 991, 1130, 1582, 1982, 2260, 3164, 3955, 3964, 4520, 4955, 6328, 6937, 7910, 7928, 9910, 13874, 15820, 19820, 27748, 31640, 34685, 39640, 55496, 69370, 111983, 138740, 223966, 277480, 447932, 559915, 783881, 895864, 1119830, 1567762, 2239660, 3135524, 3919405, 4479320, 6271048, 7838810, 15677620, 31355240]

約数ペア:

[(1, 31355240), (2, 15677620), (4, 7838810), (5, 6271048), (7, 4479320), (8, 3919405), (10, 3135524), (14, 2239660), (20, 1567762), (28, 1119830), (35, 895864), (40, 783881), (56, 559915), (70, 447932), (113, 277480), (140, 223966), (226, 138740), (280, 111983), (452, 69370), (565, 55496), (791, 39640), (904, 34685), (991, 31640), (1130, 27748), (1582, 19820), (1982, 15820), (2260, 13874), (3164, 9910), (3955, 7928), (3964, 7910), (4520, 6937), (4955, 6328)]