31399640

素因数分解:

$2^3\times 5^1\times {\mathrm{541}}^1\times {\mathrm{1451}}^1$

素因数の和:2003

約数の個数: 32

約数和(自身を含む): 70828560

約数和(自身を除く): 39428920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 541, 1082, 1451, 2164, 2705, 2902, 4328, 5410, 5804, 7255, 10820, 11608, 14510, 21640, 29020, 58040, 784991, 1569982, 3139964, 3924955, 6279928, 7849910, 15699820, 31399640]

約数ペア:

[(1, 31399640), (2, 15699820), (4, 7849910), (5, 6279928), (8, 3924955), (10, 3139964), (20, 1569982), (40, 784991), (541, 58040), (1082, 29020), (1451, 21640), (2164, 14510), (2705, 11608), (2902, 10820), (4328, 7255), (5410, 5804)]