18215211

素因数分解:

$3^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{197}}^1$

素因数の和:268

約数の個数: 48

約数和(自身を含む): 30878496

約数和(自身を除く): 12663285

約数列:

[1, 3, 7, 17, 21, 37, 49, 51, 111, 119, 147, 197, 259, 357, 591, 629, 777, 833, 1379, 1813, 1887, 2499, 3349, 4137, 4403, 5439, 7289, 9653, 10047, 13209, 21867, 23443, 28959, 30821, 51023, 70329, 92463, 123913, 153069, 164101, 357161, 371739, 492303, 867391, 1071483, 2602173, 6071737, 18215211]

約数ペア:

[(1, 18215211), (3, 6071737), (7, 2602173), (17, 1071483), (21, 867391), (37, 492303), (49, 371739), (51, 357161), (111, 164101), (119, 153069), (147, 123913), (197, 92463), (259, 70329), (357, 51023), (591, 30821), (629, 28959), (777, 23443), (833, 21867), (1379, 13209), (1813, 10047), (1887, 9653), (2499, 7289), (3349, 5439), (4137, 4403)]