18108940

素因数分解:

$2^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{10909}}^1$

素因数の和:11001

約数の個数: 24

約数和(自身を含む): 38490480

約数和(自身を除く): 20381540

約数列:

[1, 2, 4, 5, 10, 20, 83, 166, 332, 415, 830, 1660, 10909, 21818, 43636, 54545, 109090, 218180, 905447, 1810894, 3621788, 4527235, 9054470, 18108940]

約数ペア:

[(1, 18108940), (2, 9054470), (4, 4527235), (5, 3621788), (10, 1810894), (20, 905447), (83, 218180), (166, 109090), (332, 54545), (415, 43636), (830, 21818), (1660, 10909)]