19428875

素因数分解:

$5^3\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{223}}^1$

素因数の和:296

約数の個数: 32

約数和(自身を含む): 26417664

約数和(自身を除く): 6988789

約数列:

[1, 5, 17, 25, 41, 85, 125, 205, 223, 425, 697, 1025, 1115, 2125, 3485, 3791, 5125, 5575, 9143, 17425, 18955, 27875, 45715, 87125, 94775, 155431, 228575, 473875, 777155, 1142875, 3885775, 19428875]

約数ペア:

[(1, 19428875), (5, 3885775), (17, 1142875), (25, 777155), (41, 473875), (85, 228575), (125, 155431), (205, 94775), (223, 87125), (425, 45715), (697, 27875), (1025, 18955), (1115, 17425), (2125, 9143), (3485, 5575), (3791, 5125)]