20617175

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{139}}^1\times {\mathrm{349}}^1$

素因数の和:515

約数の個数: 24

約数和(自身を含む): 27342000

約数和(自身を除く): 6724825

約数列:

[1, 5, 17, 25, 85, 139, 349, 425, 695, 1745, 2363, 3475, 5933, 8725, 11815, 29665, 48511, 59075, 148325, 242555, 824687, 1212775, 4123435, 20617175]

約数ペア:

[(1, 20617175), (5, 4123435), (17, 1212775), (25, 824687), (85, 242555), (139, 148325), (349, 59075), (425, 48511), (695, 29665), (1745, 11815), (2363, 8725), (3475, 5933)]