51224860

素因数分解:

$2^2\times 5^1\times {\mathrm{1289}}^1\times {\mathrm{1987}}^1$

素因数の和:3285

約数の個数: 24

約数和(自身を含む): 107709840

約数和(自身を除く): 56484980

約数列:

[1, 2, 4, 5, 10, 20, 1289, 1987, 2578, 3974, 5156, 6445, 7948, 9935, 12890, 19870, 25780, 39740, 2561243, 5122486, 10244972, 12806215, 25612430, 51224860]

約数ペア:

[(1, 51224860), (2, 25612430), (4, 12806215), (5, 10244972), (10, 5122486), (20, 2561243), (1289, 39740), (1987, 25780), (2578, 19870), (3974, 12890), (5156, 9935), (6445, 7948)]