21720468

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{2137}}^1$

素因数の和:2173

約数の個数: 72

約数和(自身を含む): 63695296

約数和(自身を除く): 41974828

約数列:

[1, 2, 3, 4, 6, 7, 11, 12, 14, 21, 22, 28, 33, 42, 44, 66, 77, 84, 121, 132, 154, 231, 242, 308, 363, 462, 484, 726, 847, 924, 1452, 1694, 2137, 2541, 3388, 4274, 5082, 6411, 8548, 10164, 12822, 14959, 23507, 25644, 29918, 44877, 47014, 59836, 70521, 89754, 94028, 141042, 164549, 179508, 258577, 282084, 329098, 493647, 517154, 658196, 775731, 987294, 1034308, 1551462, 1810039, 1974588, 3102924, 3620078, 5430117, 7240156, 10860234, 21720468]

約数ペア:

[(1, 21720468), (2, 10860234), (3, 7240156), (4, 5430117), (6, 3620078), (7, 3102924), (11, 1974588), (12, 1810039), (14, 1551462), (21, 1034308), (22, 987294), (28, 775731), (33, 658196), (42, 517154), (44, 493647), (66, 329098), (77, 282084), (84, 258577), (121, 179508), (132, 164549), (154, 141042), (231, 94028), (242, 89754), (308, 70521), (363, 59836), (462, 47014), (484, 44877), (726, 29918), (847, 25644), (924, 23507), (1452, 14959), (1694, 12822), (2137, 10164), (2541, 8548), (3388, 6411), (4274, 5082)]