18257481

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{661}}^1$

素因数の和:715

約数の個数: 40

約数和(自身を含む): 30759168

約数和(自身を除く): 12501687

約数列:

[1, 3, 9, 11, 27, 31, 33, 81, 93, 99, 279, 297, 341, 661, 837, 891, 1023, 1983, 2511, 3069, 5949, 7271, 9207, 17847, 20491, 21813, 27621, 53541, 61473, 65439, 184419, 196317, 225401, 553257, 588951, 676203, 1659771, 2028609, 6085827, 18257481]

約数ペア:

[(1, 18257481), (3, 6085827), (9, 2028609), (11, 1659771), (27, 676203), (31, 588951), (33, 553257), (81, 225401), (93, 196317), (99, 184419), (279, 65439), (297, 61473), (341, 53541), (661, 27621), (837, 21813), (891, 20491), (1023, 17847), (1983, 9207), (2511, 7271), (3069, 5949)]