19918700

素因数分解:

$2^2\times 5^2\times {\mathrm{139}}^1\times {\mathrm{1433}}^1$

素因数の和:1586

約数の個数: 36

約数和(自身を含む): 43564920

約数和(自身を除く): 23646220

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 139, 278, 556, 695, 1390, 1433, 2780, 2866, 3475, 5732, 6950, 7165, 13900, 14330, 28660, 35825, 71650, 143300, 199187, 398374, 796748, 995935, 1991870, 3983740, 4979675, 9959350, 19918700]

約数ペア:

[(1, 19918700), (2, 9959350), (4, 4979675), (5, 3983740), (10, 1991870), (20, 995935), (25, 796748), (50, 398374), (100, 199187), (139, 143300), (278, 71650), (556, 35825), (695, 28660), (1390, 14330), (1433, 13900), (2780, 7165), (2866, 6950), (3475, 5732)]