21063315

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{1187}}^1$

素因数の和:1228

約数の個数: 48

約数和(自身を含む): 41741568

約数和(自身を除く): 20678253

約数列:

[1, 3, 5, 7, 13, 15, 21, 35, 39, 65, 91, 105, 169, 195, 273, 455, 507, 845, 1183, 1187, 1365, 2535, 3549, 3561, 5915, 5935, 8309, 15431, 17745, 17805, 24927, 41545, 46293, 77155, 108017, 124635, 200603, 231465, 324051, 540085, 601809, 1003015, 1404221, 1620255, 3009045, 4212663, 7021105, 21063315]

約数ペア:

[(1, 21063315), (3, 7021105), (5, 4212663), (7, 3009045), (13, 1620255), (15, 1404221), (21, 1003015), (35, 601809), (39, 540085), (65, 324051), (91, 231465), (105, 200603), (169, 124635), (195, 108017), (273, 77155), (455, 46293), (507, 41545), (845, 24927), (1183, 17805), (1187, 17745), (1365, 15431), (2535, 8309), (3549, 5935), (3561, 5915)]