1813960

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{449}}^1$

素因数の和:561

約数の個数: 32

約数和(自身を含む): 4131000

約数和(自身を除く): 2317040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 449, 505, 808, 898, 1010, 1796, 2020, 2245, 3592, 4040, 4490, 8980, 17960, 45349, 90698, 181396, 226745, 362792, 453490, 906980, 1813960]

約数ペア:

[(1, 1813960), (2, 906980), (4, 453490), (5, 362792), (8, 226745), (10, 181396), (20, 90698), (40, 45349), (101, 17960), (202, 8980), (404, 4490), (449, 4040), (505, 3592), (808, 2245), (898, 2020), (1010, 1796)]