18236440

素因数分解:

$2^3\times 5^1\times {\mathrm{163}}^1\times {\mathrm{2797}}^1$

素因数の和:2971

約数の個数: 32

約数和(自身を含む): 41298480

約数和(自身を除く): 23062040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 163, 326, 652, 815, 1304, 1630, 2797, 3260, 5594, 6520, 11188, 13985, 22376, 27970, 55940, 111880, 455911, 911822, 1823644, 2279555, 3647288, 4559110, 9118220, 18236440]

約数ペア:

[(1, 18236440), (2, 9118220), (4, 4559110), (5, 3647288), (8, 2279555), (10, 1823644), (20, 911822), (40, 455911), (163, 111880), (326, 55940), (652, 27970), (815, 22376), (1304, 13985), (1630, 11188), (2797, 6520), (3260, 5594)]