18972265

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{4111}}^1$

素因数の和:4200

約数の個数: 16

約数和(自身を含む): 24869376

約数和(自身を除く): 5897111

約数列:

[1, 5, 13, 65, 71, 355, 923, 4111, 4615, 20555, 53443, 267215, 291881, 1459405, 3794453, 18972265]

約数ペア:

[(1, 18972265), (5, 3794453), (13, 1459405), (65, 291881), (71, 267215), (355, 53443), (923, 20555), (4111, 4615)]