31917580

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{20201}}^1$

素因数の和:20289

約数の個数: 24

約数和(自身を含む): 67878720

約数和(自身を除く): 35961140

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 20201, 40402, 80804, 101005, 202010, 404020, 1595879, 3191758, 6383516, 7979395, 15958790, 31917580]

約数ペア:

[(1, 31917580), (2, 15958790), (4, 7979395), (5, 6383516), (10, 3191758), (20, 1595879), (79, 404020), (158, 202010), (316, 101005), (395, 80804), (790, 40402), (1580, 20201)]