15721155

素因数分解:

$3^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{1153}}^1$

素因数の和:1268

約数の個数: 32

約数和(自身を含む): 28249920

約数和(自身を除く): 12528765

約数列:

[1, 3, 5, 9, 15, 27, 45, 101, 135, 303, 505, 909, 1153, 1515, 2727, 3459, 4545, 5765, 10377, 13635, 17295, 31131, 51885, 116453, 155655, 349359, 582265, 1048077, 1746795, 3144231, 5240385, 15721155]

約数ペア:

[(1, 15721155), (3, 5240385), (5, 3144231), (9, 1746795), (15, 1048077), (27, 582265), (45, 349359), (101, 155655), (135, 116453), (303, 51885), (505, 31131), (909, 17295), (1153, 13635), (1515, 10377), (2727, 5765), (3459, 4545)]