18700786

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{43}}^2\times {\mathrm{389}}^1$

素因数の和:490

約数の個数: 24

約数和(自身を含む): 31007340

約数和(自身を除く): 12306554

約数列:

[1, 2, 13, 26, 43, 86, 389, 559, 778, 1118, 1849, 3698, 5057, 10114, 16727, 24037, 33454, 48074, 217451, 434902, 719261, 1438522, 9350393, 18700786]

約数ペア:

[(1, 18700786), (2, 9350393), (13, 1438522), (26, 719261), (43, 434902), (86, 217451), (389, 48074), (559, 33454), (778, 24037), (1118, 16727), (1849, 10114), (3698, 5057)]