17881840

素因数分解:

$2^4\times 5^1\times {\mathrm{107}}^1\times {\mathrm{2089}}^1$

素因数の和:2209

約数の個数: 40

約数和(自身を含む): 41983920

約数和(自身を除く): 24102080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 107, 214, 428, 535, 856, 1070, 1712, 2089, 2140, 4178, 4280, 8356, 8560, 10445, 16712, 20890, 33424, 41780, 83560, 167120, 223523, 447046, 894092, 1117615, 1788184, 2235230, 3576368, 4470460, 8940920, 17881840]

約数ペア:

[(1, 17881840), (2, 8940920), (4, 4470460), (5, 3576368), (8, 2235230), (10, 1788184), (16, 1117615), (20, 894092), (40, 447046), (80, 223523), (107, 167120), (214, 83560), (428, 41780), (535, 33424), (856, 20890), (1070, 16712), (1712, 10445), (2089, 8560), (2140, 8356), (4178, 4280)]