15381980

素因数分解:

$2^2\times 5^1\times {\mathrm{509}}^1\times {\mathrm{1511}}^1$

素因数の和:2029

約数の個数: 24

約数和(自身を含む): 32387040

約数和(自身を除く): 17005060

約数列:

[1, 2, 4, 5, 10, 20, 509, 1018, 1511, 2036, 2545, 3022, 5090, 6044, 7555, 10180, 15110, 30220, 769099, 1538198, 3076396, 3845495, 7690990, 15381980]

約数ペア:

[(1, 15381980), (2, 7690990), (4, 3845495), (5, 3076396), (10, 1538198), (20, 769099), (509, 30220), (1018, 15110), (1511, 10180), (2036, 7555), (2545, 6044), (3022, 5090)]