18969875

素因数分解:

$5^3\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{113}}^1$

素因数の和:224

約数の個数: 32

約数和(自身を含む): 25608960

約数和(自身を除く): 6639085

約数列:

[1, 5, 17, 25, 79, 85, 113, 125, 395, 425, 565, 1343, 1921, 1975, 2125, 2825, 6715, 8927, 9605, 9875, 14125, 33575, 44635, 48025, 151759, 167875, 223175, 240125, 758795, 1115875, 3793975, 18969875]

約数ペア:

[(1, 18969875), (5, 3793975), (17, 1115875), (25, 758795), (79, 240125), (85, 223175), (113, 167875), (125, 151759), (395, 48025), (425, 44635), (565, 33575), (1343, 14125), (1921, 9875), (1975, 9605), (2125, 8927), (2825, 6715)]