263495020

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^2\times {\mathrm{2111}}^1$

素因数の和:2278

約数の個数: 36

約数和(自身を含む): 560697984

約数和(自身を除く): 297202964

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 2111, 4222, 6241, 8444, 10555, 12482, 21110, 24964, 31205, 42220, 62410, 124820, 166769, 333538, 667076, 833845, 1667690, 3335380, 13174751, 26349502, 52699004, 65873755, 131747510, 263495020]

約数ペア:

[(1, 263495020), (2, 131747510), (4, 65873755), (5, 52699004), (10, 26349502), (20, 13174751), (79, 3335380), (158, 1667690), (316, 833845), (395, 667076), (790, 333538), (1580, 166769), (2111, 124820), (4222, 62410), (6241, 42220), (8444, 31205), (10555, 24964), (12482, 21110)]