21774564

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{1217}}^1$

素因数の和:1305

約数の個数: 72

約数和(自身を含む): 63842688

約数和(自身を除く): 42068124

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 71, 84, 126, 142, 213, 252, 284, 426, 497, 639, 852, 994, 1217, 1278, 1491, 1988, 2434, 2556, 2982, 3651, 4473, 4868, 5964, 7302, 8519, 8946, 10953, 14604, 17038, 17892, 21906, 25557, 34076, 43812, 51114, 76671, 86407, 102228, 153342, 172814, 259221, 306684, 345628, 518442, 604849, 777663, 1036884, 1209698, 1555326, 1814547, 2419396, 3110652, 3629094, 5443641, 7258188, 10887282, 21774564]

約数ペア:

[(1, 21774564), (2, 10887282), (3, 7258188), (4, 5443641), (6, 3629094), (7, 3110652), (9, 2419396), (12, 1814547), (14, 1555326), (18, 1209698), (21, 1036884), (28, 777663), (36, 604849), (42, 518442), (63, 345628), (71, 306684), (84, 259221), (126, 172814), (142, 153342), (213, 102228), (252, 86407), (284, 76671), (426, 51114), (497, 43812), (639, 34076), (852, 25557), (994, 21906), (1217, 17892), (1278, 17038), (1491, 14604), (1988, 10953), (2434, 8946), (2556, 8519), (2982, 7302), (3651, 5964), (4473, 4868)]