18884560

素因数分解:

$2^4\times 5^1\times {\mathrm{113}}^1\times {\mathrm{2089}}^1$

素因数の和:2215

約数の個数: 40

約数和(自身を含む): 44316360

約数和(自身を除く): 25431800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 113, 226, 452, 565, 904, 1130, 1808, 2089, 2260, 4178, 4520, 8356, 9040, 10445, 16712, 20890, 33424, 41780, 83560, 167120, 236057, 472114, 944228, 1180285, 1888456, 2360570, 3776912, 4721140, 9442280, 18884560]

約数ペア:

[(1, 18884560), (2, 9442280), (4, 4721140), (5, 3776912), (8, 2360570), (10, 1888456), (16, 1180285), (20, 944228), (40, 472114), (80, 236057), (113, 167120), (226, 83560), (452, 41780), (565, 33424), (904, 20890), (1130, 16712), (1808, 10445), (2089, 9040), (2260, 8356), (4178, 4520)]