18782860

素因数分解:

$2^2\times 5^1\times {\mathrm{113}}^1\times {\mathrm{8311}}^1$

素因数の和:8433

約数の個数: 24

約数和(自身を含む): 39797856

約数和(自身を除く): 21014996

約数列:

[1, 2, 4, 5, 10, 20, 113, 226, 452, 565, 1130, 2260, 8311, 16622, 33244, 41555, 83110, 166220, 939143, 1878286, 3756572, 4695715, 9391430, 18782860]

約数ペア:

[(1, 18782860), (2, 9391430), (4, 4695715), (5, 3756572), (10, 1878286), (20, 939143), (113, 166220), (226, 83110), (452, 41555), (565, 33244), (1130, 16622), (2260, 8311)]