81988775

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{281}}^1\times {\mathrm{1061}}^1$

素因数の和:1363

約数の個数: 24

約数和(自身を含む): 111408048

約数和(自身を除く): 29419273

約数列:

[1, 5, 11, 25, 55, 275, 281, 1061, 1405, 3091, 5305, 7025, 11671, 15455, 26525, 58355, 77275, 291775, 298141, 1490705, 3279551, 7453525, 16397755, 81988775]

約数ペア:

[(1, 81988775), (5, 16397755), (11, 7453525), (25, 3279551), (55, 1490705), (275, 298141), (281, 291775), (1061, 77275), (1405, 58355), (3091, 26525), (5305, 15455), (7025, 11671)]