18927560

素因数分解:

$2^3\times 5^1\times {\mathrm{163}}^1\times {\mathrm{2903}}^1$

素因数の和:3077

約数の個数: 32

約数和(自身を含む): 42863040

約数和(自身を除く): 23935480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 163, 326, 652, 815, 1304, 1630, 2903, 3260, 5806, 6520, 11612, 14515, 23224, 29030, 58060, 116120, 473189, 946378, 1892756, 2365945, 3785512, 4731890, 9463780, 18927560]

約数ペア:

[(1, 18927560), (2, 9463780), (4, 4731890), (5, 3785512), (8, 2365945), (10, 1892756), (20, 946378), (40, 473189), (163, 116120), (326, 58060), (652, 29030), (815, 23224), (1304, 14515), (1630, 11612), (2903, 6520), (3260, 5806)]