64057940

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{40543}}^1$

素因数の和:40631

約数の個数: 24

約数和(自身を含む): 136227840

約数和(自身を除く): 72169900

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 40543, 81086, 162172, 202715, 405430, 810860, 3202897, 6405794, 12811588, 16014485, 32028970, 64057940]

約数ペア:

[(1, 64057940), (2, 32028970), (4, 16014485), (5, 12811588), (10, 6405794), (20, 3202897), (79, 810860), (158, 405430), (316, 202715), (395, 162172), (790, 81086), (1580, 40543)]