21112173

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{331}}^1\times {\mathrm{373}}^1$

素因数の和:729

約数の個数: 24

約数和(自身を含む): 32283680

約数和(自身を除く): 11171507

約数列:

[1, 3, 9, 19, 57, 171, 331, 373, 993, 1119, 2979, 3357, 6289, 7087, 18867, 21261, 56601, 63783, 123463, 370389, 1111167, 2345797, 7037391, 21112173]

約数ペア:

[(1, 21112173), (3, 7037391), (9, 2345797), (19, 1111167), (57, 370389), (171, 123463), (331, 63783), (373, 56601), (993, 21261), (1119, 18867), (2979, 7087), (3357, 6289)]