21350080

素因数分解:

$2^6\times 5^1\times {\mathrm{137}}^1\times {\mathrm{487}}^1$

素因数の和:641

約数の個数: 56

約数和(自身を含む): 51316128

約数和(自身を除く): 29966048

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 137, 160, 274, 320, 487, 548, 685, 974, 1096, 1370, 1948, 2192, 2435, 2740, 3896, 4384, 4870, 5480, 7792, 8768, 9740, 10960, 15584, 19480, 21920, 31168, 38960, 43840, 66719, 77920, 133438, 155840, 266876, 333595, 533752, 667190, 1067504, 1334380, 2135008, 2668760, 4270016, 5337520, 10675040, 21350080]

約数ペア:

[(1, 21350080), (2, 10675040), (4, 5337520), (5, 4270016), (8, 2668760), (10, 2135008), (16, 1334380), (20, 1067504), (32, 667190), (40, 533752), (64, 333595), (80, 266876), (137, 155840), (160, 133438), (274, 77920), (320, 66719), (487, 43840), (548, 38960), (685, 31168), (974, 21920), (1096, 19480), (1370, 15584), (1948, 10960), (2192, 9740), (2435, 8768), (2740, 7792), (3896, 5480), (4384, 4870)]