31408820

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{103}}^1\times {\mathrm{193}}^1$

素因数の和:384

約数の個数: 48

約数和(自身を含む): 67791360

約数和(自身を除く): 36382540

約数列:

[1, 2, 4, 5, 10, 20, 79, 103, 158, 193, 206, 316, 386, 395, 412, 515, 772, 790, 965, 1030, 1580, 1930, 2060, 3860, 8137, 15247, 16274, 19879, 30494, 32548, 39758, 40685, 60988, 76235, 79516, 81370, 99395, 152470, 162740, 198790, 304940, 397580, 1570441, 3140882, 6281764, 7852205, 15704410, 31408820]

約数ペア:

[(1, 31408820), (2, 15704410), (4, 7852205), (5, 6281764), (10, 3140882), (20, 1570441), (79, 397580), (103, 304940), (158, 198790), (193, 162740), (206, 152470), (316, 99395), (386, 81370), (395, 79516), (412, 76235), (515, 60988), (772, 40685), (790, 39758), (965, 32548), (1030, 30494), (1580, 19879), (1930, 16274), (2060, 15247), (3860, 8137)]