2008202120

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{635507}}^1$

素因数の和:635597

約数の個数: 32

約数和(自身を含む): 4575657600

約数和(自身を除く): 2567455480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 158, 316, 395, 632, 790, 1580, 3160, 635507, 1271014, 2542028, 3177535, 5084056, 6355070, 12710140, 25420280, 50205053, 100410106, 200820212, 251025265, 401640424, 502050530, 1004101060, 2008202120]

約数ペア:

[(1, 2008202120), (2, 1004101060), (4, 502050530), (5, 401640424), (8, 251025265), (10, 200820212), (20, 100410106), (40, 50205053), (79, 25420280), (158, 12710140), (316, 6355070), (395, 5084056), (632, 3177535), (790, 2542028), (1580, 1271014), (3160, 635507)]