19697800

素因数分解:

$2^3\times 5^2\times {\mathrm{149}}^1\times {\mathrm{661}}^1$

素因数の和:826

約数の個数: 48

約数和(自身を含む): 46174500

約数和(自身を除く): 26476700

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 149, 200, 298, 596, 661, 745, 1192, 1322, 1490, 2644, 2980, 3305, 3725, 5288, 5960, 6610, 7450, 13220, 14900, 16525, 26440, 29800, 33050, 66100, 98489, 132200, 196978, 393956, 492445, 787912, 984890, 1969780, 2462225, 3939560, 4924450, 9848900, 19697800]

約数ペア:

[(1, 19697800), (2, 9848900), (4, 4924450), (5, 3939560), (8, 2462225), (10, 1969780), (20, 984890), (25, 787912), (40, 492445), (50, 393956), (100, 196978), (149, 132200), (200, 98489), (298, 66100), (596, 33050), (661, 29800), (745, 26440), (1192, 16525), (1322, 14900), (1490, 13220), (2644, 7450), (2980, 6610), (3305, 5960), (3725, 5288)]