19128920

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{6551}}^1$

素因数の和:6635

約数の個数: 32

約数和(自身を含む): 43636320

約数和(自身を除く): 24507400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 292, 365, 584, 730, 1460, 2920, 6551, 13102, 26204, 32755, 52408, 65510, 131020, 262040, 478223, 956446, 1912892, 2391115, 3825784, 4782230, 9564460, 19128920]

約数ペア:

[(1, 19128920), (2, 9564460), (4, 4782230), (5, 3825784), (8, 2391115), (10, 1912892), (20, 956446), (40, 478223), (73, 262040), (146, 131020), (292, 65510), (365, 52408), (584, 32755), (730, 26204), (1460, 13102), (2920, 6551)]