20756870

素因数分解:

$2^1\times 5^1\times {\mathrm{109}}^1\times {\mathrm{137}}^1\times {\mathrm{139}}^1$

素因数の和:392

約数の個数: 32

約数和(自身を含む): 38253600

約数和(自身を除く): 17496730

約数列:

[1, 2, 5, 10, 109, 137, 139, 218, 274, 278, 545, 685, 695, 1090, 1370, 1390, 14933, 15151, 19043, 29866, 30302, 38086, 74665, 75755, 95215, 149330, 151510, 190430, 2075687, 4151374, 10378435, 20756870]

約数ペア:

[(1, 20756870), (2, 10378435), (5, 4151374), (10, 2075687), (109, 190430), (137, 151510), (139, 149330), (218, 95215), (274, 75755), (278, 74665), (545, 38086), (685, 30302), (695, 29866), (1090, 19043), (1370, 15151), (1390, 14933)]