21306051

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{601}}^1$

素因数の和:724

約数の個数: 32

約数和(自身を含む): 34386240

約数和(自身を除く): 13080189

約数列:

[1, 3, 9, 13, 27, 39, 101, 117, 303, 351, 601, 909, 1313, 1803, 2727, 3939, 5409, 7813, 11817, 16227, 23439, 35451, 60701, 70317, 182103, 210951, 546309, 789113, 1638927, 2367339, 7102017, 21306051]

約数ペア:

[(1, 21306051), (3, 7102017), (9, 2367339), (13, 1638927), (27, 789113), (39, 546309), (101, 210951), (117, 182103), (303, 70317), (351, 60701), (601, 35451), (909, 23439), (1313, 16227), (1803, 11817), (2727, 7813), (3939, 5409)]