19810986

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{253987}}^1$

素因数の和:254005

約数の個数: 16

約数和(自身を含む): 42669984

約数和(自身を除く): 22858998

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 253987, 507974, 761961, 1523922, 3301831, 6603662, 9905493, 19810986]

約数ペア:

[(1, 19810986), (2, 9905493), (3, 6603662), (6, 3301831), (13, 1523922), (26, 761961), (39, 507974), (78, 253987)]