20154050

素因数分解:

$2^1\times 5^2\times 7^1\times {\mathrm{89}}^1\times {\mathrm{647}}^1$

素因数の和:755

約数の個数: 48

約数和(自身を含む): 43390080

約数和(自身を除く): 23236030

約数列:

[1, 2, 5, 7, 10, 14, 25, 35, 50, 70, 89, 175, 178, 350, 445, 623, 647, 890, 1246, 1294, 2225, 3115, 3235, 4450, 4529, 6230, 6470, 9058, 15575, 16175, 22645, 31150, 32350, 45290, 57583, 113225, 115166, 226450, 287915, 403081, 575830, 806162, 1439575, 2015405, 2879150, 4030810, 10077025, 20154050]

約数ペア:

[(1, 20154050), (2, 10077025), (5, 4030810), (7, 2879150), (10, 2015405), (14, 1439575), (25, 806162), (35, 575830), (50, 403081), (70, 287915), (89, 226450), (175, 115166), (178, 113225), (350, 57583), (445, 45290), (623, 32350), (647, 31150), (890, 22645), (1246, 16175), (1294, 15575), (2225, 9058), (3115, 6470), (3235, 6230), (4450, 4529)]