129397360

素因数分解:

$2^4\times 5^1\times {\mathrm{661}}^1\times {\mathrm{2447}}^1$

素因数の和:3121

約数の個数: 40

約数和(自身を含む): 301427136

約数和(自身を除く): 172029776

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 661, 1322, 2447, 2644, 3305, 4894, 5288, 6610, 9788, 10576, 12235, 13220, 19576, 24470, 26440, 39152, 48940, 52880, 97880, 195760, 1617467, 3234934, 6469868, 8087335, 12939736, 16174670, 25879472, 32349340, 64698680, 129397360]

約数ペア:

[(1, 129397360), (2, 64698680), (4, 32349340), (5, 25879472), (8, 16174670), (10, 12939736), (16, 8087335), (20, 6469868), (40, 3234934), (80, 1617467), (661, 195760), (1322, 97880), (2447, 52880), (2644, 48940), (3305, 39152), (4894, 26440), (5288, 24470), (6610, 19576), (9788, 13220), (10576, 12235)]