20312920

素因数分解:

$2^3\times 5^1\times {\mathrm{179}}^1\times {\mathrm{2837}}^1$

素因数の和:3027

約数の個数: 32

約数和(自身を含む): 45975600

約数和(自身を除く): 25662680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 179, 358, 716, 895, 1432, 1790, 2837, 3580, 5674, 7160, 11348, 14185, 22696, 28370, 56740, 113480, 507823, 1015646, 2031292, 2539115, 4062584, 5078230, 10156460, 20312920]

約数ペア:

[(1, 20312920), (2, 10156460), (4, 5078230), (5, 4062584), (8, 2539115), (10, 2031292), (20, 1015646), (40, 507823), (179, 113480), (358, 56740), (716, 28370), (895, 22696), (1432, 14185), (1790, 11348), (2837, 7160), (3580, 5674)]