18494780

素因数分解:

$2^2\times 5^1\times {\mathrm{661}}^1\times {\mathrm{1399}}^1$

素因数の和:2069

約数の個数: 24

約数和(自身を含む): 38925600

約数和(自身を除く): 20430820

約数列:

[1, 2, 4, 5, 10, 20, 661, 1322, 1399, 2644, 2798, 3305, 5596, 6610, 6995, 13220, 13990, 27980, 924739, 1849478, 3698956, 4623695, 9247390, 18494780]

約数ペア:

[(1, 18494780), (2, 9247390), (4, 4623695), (5, 3698956), (10, 1849478), (20, 924739), (661, 27980), (1322, 13990), (1399, 13220), (2644, 6995), (2798, 6610), (3305, 5596)]