64921420

素因数分解:

$2^2\times 5^1\times {\mathrm{457}}^1\times {\mathrm{7103}}^1$

素因数の和:7569

約数の個数: 24

約数和(自身を含む): 136652544

約数和(自身を除く): 71731124

約数列:

[1, 2, 4, 5, 10, 20, 457, 914, 1828, 2285, 4570, 7103, 9140, 14206, 28412, 35515, 71030, 142060, 3246071, 6492142, 12984284, 16230355, 32460710, 64921420]

約数ペア:

[(1, 64921420), (2, 32460710), (4, 16230355), (5, 12984284), (10, 6492142), (20, 3246071), (457, 142060), (914, 71030), (1828, 35515), (2285, 28412), (4570, 14206), (7103, 9140)]