205440820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{613}}^1\times {\mathrm{1289}}^1$

素因数の和:1924

約数の個数: 48

約数和(自身を含む): 465731280

約数和(自身を除く): 260290460

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 613, 1226, 1289, 2452, 2578, 3065, 5156, 6130, 6445, 7969, 12260, 12890, 15938, 16757, 25780, 31876, 33514, 39845, 67028, 79690, 83785, 159380, 167570, 335140, 790157, 1580314, 3160628, 3950785, 7901570, 10272041, 15803140, 20544082, 41088164, 51360205, 102720410, 205440820]

約数ペア:

[(1, 205440820), (2, 102720410), (4, 51360205), (5, 41088164), (10, 20544082), (13, 15803140), (20, 10272041), (26, 7901570), (52, 3950785), (65, 3160628), (130, 1580314), (260, 790157), (613, 335140), (1226, 167570), (1289, 159380), (2452, 83785), (2578, 79690), (3065, 67028), (5156, 39845), (6130, 33514), (6445, 31876), (7969, 25780), (12260, 16757), (12890, 15938)]