31217480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{111491}}^1$

素因数の和:111509

約数の個数: 32

約数和(自身を含む): 80274240

約数和(自身を除く): 49056760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 111491, 222982, 445964, 557455, 780437, 891928, 1114910, 1560874, 2229820, 3121748, 3902185, 4459640, 6243496, 7804370, 15608740, 31217480]

約数ペア:

[(1, 31217480), (2, 15608740), (4, 7804370), (5, 6243496), (7, 4459640), (8, 3902185), (10, 3121748), (14, 2229820), (20, 1560874), (28, 1114910), (35, 891928), (40, 780437), (56, 557455), (70, 445964), (140, 222982), (280, 111491)]