21130317

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{313}}^1\times {\mathrm{577}}^1$

素因数の和:909

約数の個数: 24

約数和(自身を含む): 33031544

約数和(自身を除く): 11901227

約数列:

[1, 3, 9, 13, 39, 117, 313, 577, 939, 1731, 2817, 4069, 5193, 7501, 12207, 22503, 36621, 67509, 180601, 541803, 1625409, 2347813, 7043439, 21130317]

約数ペア:

[(1, 21130317), (3, 7043439), (9, 2347813), (13, 1625409), (39, 541803), (117, 180601), (313, 67509), (577, 36621), (939, 22503), (1731, 12207), (2817, 7501), (4069, 5193)]