28782860

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{18217}}^1$

素因数の和:18305

約数の個数: 24

約数和(自身を含む): 61212480

約数和(自身を除く): 32429620

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 18217, 36434, 72868, 91085, 182170, 364340, 1439143, 2878286, 5756572, 7195715, 14391430, 28782860]

約数ペア:

[(1, 28782860), (2, 14391430), (4, 7195715), (5, 5756572), (10, 2878286), (20, 1439143), (79, 364340), (158, 182170), (316, 91085), (395, 72868), (790, 36434), (1580, 18217)]