28897640

素因数分解:

$2^3\times 5^1\times {\mathrm{449}}^1\times {\mathrm{1609}}^1$

素因数の和:2069

約数の個数: 32

約数和(自身を含む): 65205000

約数和(自身を除く): 36307360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 449, 898, 1609, 1796, 2245, 3218, 3592, 4490, 6436, 8045, 8980, 12872, 16090, 17960, 32180, 64360, 722441, 1444882, 2889764, 3612205, 5779528, 7224410, 14448820, 28897640]

約数ペア:

[(1, 28897640), (2, 14448820), (4, 7224410), (5, 5779528), (8, 3612205), (10, 2889764), (20, 1444882), (40, 722441), (449, 64360), (898, 32180), (1609, 17960), (1796, 16090), (2245, 12872), (3218, 8980), (3592, 8045), (4490, 6436)]