290885900

素因数分解:

$2^2\times 5^2\times {\mathrm{79}}^1\times {\mathrm{36821}}^1$

素因数の和:36914

約数の個数: 36

約数和(自身を含む): 639229920

約数和(自身を除く): 348344020

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 79, 100, 158, 316, 395, 790, 1580, 1975, 3950, 7900, 36821, 73642, 147284, 184105, 368210, 736420, 920525, 1841050, 2908859, 3682100, 5817718, 11635436, 14544295, 29088590, 58177180, 72721475, 145442950, 290885900]

約数ペア:

[(1, 290885900), (2, 145442950), (4, 72721475), (5, 58177180), (10, 29088590), (20, 14544295), (25, 11635436), (50, 5817718), (79, 3682100), (100, 2908859), (158, 1841050), (316, 920525), (395, 736420), (790, 368210), (1580, 184105), (1975, 147284), (3950, 73642), (7900, 36821)]