21136842

素因数分解:

$2^1\times 3^3\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{149}}^1$

素因数の和:268

約数の個数: 64

約数和(自身を含む): 49248000

約数和(自身を除く): 28111158

約数列:

[1, 2, 3, 6, 9, 18, 27, 37, 54, 71, 74, 111, 142, 149, 213, 222, 298, 333, 426, 447, 639, 666, 894, 999, 1278, 1341, 1917, 1998, 2627, 2682, 3834, 4023, 5254, 5513, 7881, 8046, 10579, 11026, 15762, 16539, 21158, 23643, 31737, 33078, 47286, 49617, 63474, 70929, 95211, 99234, 141858, 148851, 190422, 285633, 297702, 391423, 571266, 782846, 1174269, 2348538, 3522807, 7045614, 10568421, 21136842]

約数ペア:

[(1, 21136842), (2, 10568421), (3, 7045614), (6, 3522807), (9, 2348538), (18, 1174269), (27, 782846), (37, 571266), (54, 391423), (71, 297702), (74, 285633), (111, 190422), (142, 148851), (149, 141858), (213, 99234), (222, 95211), (298, 70929), (333, 63474), (426, 49617), (447, 47286), (639, 33078), (666, 31737), (894, 23643), (999, 21158), (1278, 16539), (1341, 15762), (1917, 11026), (1998, 10579), (2627, 8046), (2682, 7881), (3834, 5513), (4023, 5254)]