19467729

素因数分解:

$3^3\times {\mathrm{23}}^2\times {\mathrm{29}}^1\times {\mathrm{47}}^1$

素因数の和:131

約数の個数: 48

約数和(自身を含む): 31852800

約数和(自身を除く): 12385071

約数列:

[1, 3, 9, 23, 27, 29, 47, 69, 87, 141, 207, 261, 423, 529, 621, 667, 783, 1081, 1269, 1363, 1587, 2001, 3243, 4089, 4761, 6003, 9729, 12267, 14283, 15341, 18009, 24863, 29187, 31349, 36801, 46023, 74589, 94047, 138069, 223767, 282141, 414207, 671301, 721027, 846423, 2163081, 6489243, 19467729]

約数ペア:

[(1, 19467729), (3, 6489243), (9, 2163081), (23, 846423), (27, 721027), (29, 671301), (47, 414207), (69, 282141), (87, 223767), (141, 138069), (207, 94047), (261, 74589), (423, 46023), (529, 36801), (621, 31349), (667, 29187), (783, 24863), (1081, 18009), (1269, 15341), (1363, 14283), (1587, 12267), (2001, 9729), (3243, 6003), (4089, 4761)]