64410440

素因数分解:

$2^3\times 5^1\times {\mathrm{1259}}^1\times {\mathrm{1279}}^1$

素因数の和:2549

約数の個数: 32

約数和(自身を含む): 145152000

約数和(自身を除く): 80741560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1259, 1279, 2518, 2558, 5036, 5116, 6295, 6395, 10072, 10232, 12590, 12790, 25180, 25580, 50360, 51160, 1610261, 3220522, 6441044, 8051305, 12882088, 16102610, 32205220, 64410440]

約数ペア:

[(1, 64410440), (2, 32205220), (4, 16102610), (5, 12882088), (8, 8051305), (10, 6441044), (20, 3220522), (40, 1610261), (1259, 51160), (1279, 50360), (2518, 25580), (2558, 25180), (5036, 12790), (5116, 12590), (6295, 10232), (6395, 10072)]