78902920

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{18097}}^1$

素因数の和:18217

約数の個数: 32

約数和(自身を含む): 179170200

約数和(自身を除く): 100267280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 872, 1090, 2180, 4360, 18097, 36194, 72388, 90485, 144776, 180970, 361940, 723880, 1972573, 3945146, 7890292, 9862865, 15780584, 19725730, 39451460, 78902920]

約数ペア:

[(1, 78902920), (2, 39451460), (4, 19725730), (5, 15780584), (8, 9862865), (10, 7890292), (20, 3945146), (40, 1972573), (109, 723880), (218, 361940), (436, 180970), (545, 144776), (872, 90485), (1090, 72388), (2180, 36194), (4360, 18097)]