19970975

素因数分解:

$5^2\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{353}}^1$

素因数の和:467

約数の個数: 24

約数和(自身を含む): 25986432

約数和(自身を除く): 6015457

約数列:

[1, 5, 25, 31, 73, 155, 353, 365, 775, 1765, 1825, 2263, 8825, 10943, 11315, 25769, 54715, 56575, 128845, 273575, 644225, 798839, 3994195, 19970975]

約数ペア:

[(1, 19970975), (5, 3994195), (25, 798839), (31, 644225), (73, 273575), (155, 128845), (353, 56575), (365, 54715), (775, 25769), (1765, 11315), (1825, 10943), (2263, 8825)]