1987900

素因数分解:

$2^2\times 5^2\times {\mathrm{103}}^1\times {\mathrm{193}}^1$

素因数の和:310

約数の個数: 36

約数和(自身を含む): 4378192

約数和(自身を除く): 2390292

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 103, 193, 206, 386, 412, 515, 772, 965, 1030, 1930, 2060, 2575, 3860, 4825, 5150, 9650, 10300, 19300, 19879, 39758, 79516, 99395, 198790, 397580, 496975, 993950, 1987900]

約数ペア:

[(1, 1987900), (2, 993950), (4, 496975), (5, 397580), (10, 198790), (20, 99395), (25, 79516), (50, 39758), (100, 19879), (103, 19300), (193, 10300), (206, 9650), (386, 5150), (412, 4825), (515, 3860), (772, 2575), (965, 2060), (1030, 1930)]