18331775

素因数分解:

$5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{107}}^1$

素因数の和:224

約数の個数: 48

約数和(自身を含む): 28926720

約数和(自身を除く): 10594945

約数列:

[1, 5, 7, 11, 25, 35, 55, 77, 89, 107, 175, 275, 385, 445, 535, 623, 749, 979, 1177, 1925, 2225, 2675, 3115, 3745, 4895, 5885, 6853, 8239, 9523, 15575, 18725, 24475, 29425, 34265, 41195, 47615, 66661, 104753, 171325, 205975, 238075, 333305, 523765, 733271, 1666525, 2618825, 3666355, 18331775]

約数ペア:

[(1, 18331775), (5, 3666355), (7, 2618825), (11, 1666525), (25, 733271), (35, 523765), (55, 333305), (77, 238075), (89, 205975), (107, 171325), (175, 104753), (275, 66661), (385, 47615), (445, 41195), (535, 34265), (623, 29425), (749, 24475), (979, 18725), (1177, 15575), (1925, 9523), (2225, 8239), (2675, 6853), (3115, 5885), (3745, 4895)]