21735459

素因数分解:

$3^4\times {\mathrm{53}}^1\times {\mathrm{61}}^1\times {\mathrm{83}}^1$

素因数の和:209

約数の個数: 40

約数和(自身を含む): 34029072

約数和(自身を除く): 12293613

約数列:

[1, 3, 9, 27, 53, 61, 81, 83, 159, 183, 249, 477, 549, 747, 1431, 1647, 2241, 3233, 4293, 4399, 4941, 5063, 6723, 9699, 13197, 15189, 29097, 39591, 45567, 87291, 118773, 136701, 261873, 268339, 356319, 410103, 805017, 2415051, 7245153, 21735459]

約数ペア:

[(1, 21735459), (3, 7245153), (9, 2415051), (27, 805017), (53, 410103), (61, 356319), (81, 268339), (83, 261873), (159, 136701), (183, 118773), (249, 87291), (477, 45567), (549, 39591), (747, 29097), (1431, 15189), (1647, 13197), (2241, 9699), (3233, 6723), (4293, 5063), (4399, 4941)]