20864628

素因数分解:

$2^2\times 3^4\times {\mathrm{71}}^1\times {\mathrm{907}}^1$

素因数の和:994

約数の個数: 60

約数和(自身を含む): 55373472

約数和(自身を除く): 34508844

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 71, 81, 108, 142, 162, 213, 284, 324, 426, 639, 852, 907, 1278, 1814, 1917, 2556, 2721, 3628, 3834, 5442, 5751, 7668, 8163, 10884, 11502, 16326, 23004, 24489, 32652, 48978, 64397, 73467, 97956, 128794, 146934, 193191, 257588, 293868, 386382, 579573, 772764, 1159146, 1738719, 2318292, 3477438, 5216157, 6954876, 10432314, 20864628]

約数ペア:

[(1, 20864628), (2, 10432314), (3, 6954876), (4, 5216157), (6, 3477438), (9, 2318292), (12, 1738719), (18, 1159146), (27, 772764), (36, 579573), (54, 386382), (71, 293868), (81, 257588), (108, 193191), (142, 146934), (162, 128794), (213, 97956), (284, 73467), (324, 64397), (426, 48978), (639, 32652), (852, 24489), (907, 23004), (1278, 16326), (1814, 11502), (1917, 10884), (2556, 8163), (2721, 7668), (3628, 5751), (3834, 5442)]