28178225

素因数分解:

$5^2\times {\mathrm{31}}^1\times {\mathrm{103}}^1\times {\mathrm{353}}^1$

素因数の和:497

約数の個数: 24

約数和(自身を含む): 36521472

約数和(自身を除く): 8343247

約数列:

[1, 5, 25, 31, 103, 155, 353, 515, 775, 1765, 2575, 3193, 8825, 10943, 15965, 36359, 54715, 79825, 181795, 273575, 908975, 1127129, 5635645, 28178225]

約数ペア:

[(1, 28178225), (5, 5635645), (25, 1127129), (31, 908975), (103, 273575), (155, 181795), (353, 79825), (515, 54715), (775, 36359), (1765, 15965), (2575, 10943), (3193, 8825)]