18763480

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{10909}}^1$

素因数の和:10963

約数の個数: 32

約数和(自身を含む): 43203600

約数和(自身を除く): 24440120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 10909, 21818, 43636, 54545, 87272, 109090, 218180, 436360, 469087, 938174, 1876348, 2345435, 3752696, 4690870, 9381740, 18763480]

約数ペア:

[(1, 18763480), (2, 9381740), (4, 4690870), (5, 3752696), (8, 2345435), (10, 1876348), (20, 938174), (40, 469087), (43, 436360), (86, 218180), (172, 109090), (215, 87272), (344, 54545), (430, 43636), (860, 21818), (1720, 10909)]