18955225

素因数分解:

$5^2\times {\mathrm{59}}^1\times {\mathrm{71}}^1\times {\mathrm{181}}^1$

素因数の和:321

約数の個数: 24

約数和(自身を含む): 24373440

約数和(自身を除く): 5418215

約数列:

[1, 5, 25, 59, 71, 181, 295, 355, 905, 1475, 1775, 4189, 4525, 10679, 12851, 20945, 53395, 64255, 104725, 266975, 321275, 758209, 3791045, 18955225]

約数ペア:

[(1, 18955225), (5, 3791045), (25, 758209), (59, 321275), (71, 266975), (181, 104725), (295, 64255), (355, 53395), (905, 20945), (1475, 12851), (1775, 10679), (4189, 4525)]