129398840

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{40949}}^1$

素因数の和:41039

約数の個数: 32

約数和(自身を含む): 294840000

約数和(自身を除く): 165441160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 158, 316, 395, 632, 790, 1580, 3160, 40949, 81898, 163796, 204745, 327592, 409490, 818980, 1637960, 3234971, 6469942, 12939884, 16174855, 25879768, 32349710, 64699420, 129398840]

約数ペア:

[(1, 129398840), (2, 64699420), (4, 32349710), (5, 25879768), (8, 16174855), (10, 12939884), (20, 6469942), (40, 3234971), (79, 1637960), (158, 818980), (316, 409490), (395, 327592), (632, 204745), (790, 163796), (1580, 81898), (3160, 40949)]