21524811

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{43}}^1\times {\mathrm{197}}^1$

素因数の和:272

約数の個数: 48

約数和(自身を含む): 37078272

約数和(自身を除く): 15553461

約数列:

[1, 3, 7, 11, 21, 33, 43, 77, 121, 129, 197, 231, 301, 363, 473, 591, 847, 903, 1379, 1419, 2167, 2541, 3311, 4137, 5203, 6501, 8471, 9933, 15169, 15609, 23837, 25413, 36421, 45507, 59297, 71511, 93181, 109263, 166859, 177891, 279543, 500577, 652267, 1024991, 1956801, 3074973, 7174937, 21524811]

約数ペア:

[(1, 21524811), (3, 7174937), (7, 3074973), (11, 1956801), (21, 1024991), (33, 652267), (43, 500577), (77, 279543), (121, 177891), (129, 166859), (197, 109263), (231, 93181), (301, 71511), (363, 59297), (473, 45507), (591, 36421), (847, 25413), (903, 23837), (1379, 15609), (1419, 15169), (2167, 9933), (2541, 8471), (3311, 6501), (4137, 5203)]