21654556

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{167}}^1\times {\mathrm{421}}^1$

素因数の和:610

約数の個数: 48

約数和(自身を含む): 47642112

約数和(自身を除く): 25987556

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 154, 167, 308, 334, 421, 668, 842, 1169, 1684, 1837, 2338, 2947, 3674, 4631, 4676, 5894, 7348, 9262, 11788, 12859, 18524, 25718, 32417, 51436, 64834, 70307, 129668, 140614, 281228, 492149, 773377, 984298, 1546754, 1968596, 3093508, 5413639, 10827278, 21654556]

約数ペア:

[(1, 21654556), (2, 10827278), (4, 5413639), (7, 3093508), (11, 1968596), (14, 1546754), (22, 984298), (28, 773377), (44, 492149), (77, 281228), (154, 140614), (167, 129668), (308, 70307), (334, 64834), (421, 51436), (668, 32417), (842, 25718), (1169, 18524), (1684, 12859), (1837, 11788), (2338, 9262), (2947, 7348), (3674, 5894), (4631, 4676)]