18521349

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{37}}^1\times {\mathrm{197}}^1$

素因数の和:266

約数の個数: 48

約数和(自身を含む): 32022144

約数和(自身を除く): 13500795

約数列:

[1, 3, 7, 11, 21, 33, 37, 77, 111, 121, 197, 231, 259, 363, 407, 591, 777, 847, 1221, 1379, 2167, 2541, 2849, 4137, 4477, 6501, 7289, 8547, 13431, 15169, 21867, 23837, 31339, 45507, 51023, 71511, 80179, 94017, 153069, 166859, 240537, 500577, 561253, 881969, 1683759, 2645907, 6173783, 18521349]

約数ペア:

[(1, 18521349), (3, 6173783), (7, 2645907), (11, 1683759), (21, 881969), (33, 561253), (37, 500577), (77, 240537), (111, 166859), (121, 153069), (197, 94017), (231, 80179), (259, 71511), (363, 51023), (407, 45507), (591, 31339), (777, 23837), (847, 21867), (1221, 15169), (1379, 13431), (2167, 8547), (2541, 7289), (2849, 6501), (4137, 4477)]