27781593

素因数分解:

$3^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{109}}^1\times {\mathrm{229}}^1$

素因数の和:401

約数の個数: 32

約数和(自身を含む): 43718400

約数和(自身を除く): 15936807

約数列:

[1, 3, 7, 21, 53, 109, 159, 229, 327, 371, 687, 763, 1113, 1603, 2289, 4809, 5777, 12137, 17331, 24961, 36411, 40439, 74883, 84959, 121317, 174727, 254877, 524181, 1322933, 3968799, 9260531, 27781593]

約数ペア:

[(1, 27781593), (3, 9260531), (7, 3968799), (21, 1322933), (53, 524181), (109, 254877), (159, 174727), (229, 121317), (327, 84959), (371, 74883), (687, 40439), (763, 36411), (1113, 24961), (1603, 17331), (2289, 12137), (4809, 5777)]