18500471

素因数分解:

${\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{127}}^1$

素因数の和:215

約数の個数: 32

約数和(自身を含む): 23224320

約数和(自身を除く): 4723849

約数列:

[1, 11, 17, 19, 41, 127, 187, 209, 323, 451, 697, 779, 1397, 2159, 2413, 3553, 5207, 7667, 8569, 13243, 23749, 26543, 41021, 57277, 88519, 98933, 145673, 451231, 973709, 1088263, 1681861, 18500471]

約数ペア:

[(1, 18500471), (11, 1681861), (17, 1088263), (19, 973709), (41, 451231), (127, 145673), (187, 98933), (209, 88519), (323, 57277), (451, 41021), (697, 26543), (779, 23749), (1397, 13243), (2159, 8569), (2413, 7667), (3553, 5207)]