90190120

素因数分解:

$2^3\times 5^1\times {\mathrm{223}}^1\times {\mathrm{10111}}^1$

素因数の和:10345

約数の個数: 32

約数和(自身を含む): 203857920

約数和(自身を除く): 113667800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 223, 446, 892, 1115, 1784, 2230, 4460, 8920, 10111, 20222, 40444, 50555, 80888, 101110, 202220, 404440, 2254753, 4509506, 9019012, 11273765, 18038024, 22547530, 45095060, 90190120]

約数ペア:

[(1, 90190120), (2, 45095060), (4, 22547530), (5, 18038024), (8, 11273765), (10, 9019012), (20, 4509506), (40, 2254753), (223, 404440), (446, 202220), (892, 101110), (1115, 80888), (1784, 50555), (2230, 40444), (4460, 20222), (8920, 10111)]