21764079

素因数分解:

$3^3\times {\mathrm{53}}^1\times {\mathrm{67}}^1\times {\mathrm{227}}^1$

素因数の和:356

約数の個数: 32

約数和(自身を含む): 33488640

約数和(自身を除く): 11724561

約数列:

[1, 3, 9, 27, 53, 67, 159, 201, 227, 477, 603, 681, 1431, 1809, 2043, 3551, 6129, 10653, 12031, 15209, 31959, 36093, 45627, 95877, 108279, 136881, 324837, 410643, 806077, 2418231, 7254693, 21764079]

約数ペア:

[(1, 21764079), (3, 7254693), (9, 2418231), (27, 806077), (53, 410643), (67, 324837), (159, 136881), (201, 108279), (227, 95877), (477, 45627), (603, 36093), (681, 31959), (1431, 15209), (1809, 12031), (2043, 10653), (3551, 6129)]