20957175

素因数分解:

$3^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{5479}}^1$

素因数の和:5512

約数の個数: 36

約数和(自身を含む): 39751920

約数和(自身を除く): 18794745

約数列:

[1, 3, 5, 9, 15, 17, 25, 45, 51, 75, 85, 153, 225, 255, 425, 765, 1275, 3825, 5479, 16437, 27395, 49311, 82185, 93143, 136975, 246555, 279429, 410925, 465715, 838287, 1232775, 1397145, 2328575, 4191435, 6985725, 20957175]

約数ペア:

[(1, 20957175), (3, 6985725), (5, 4191435), (9, 2328575), (15, 1397145), (17, 1232775), (25, 838287), (45, 465715), (51, 410925), (75, 279429), (85, 246555), (153, 136975), (225, 93143), (255, 82185), (425, 49311), (765, 27395), (1275, 16437), (3825, 5479)]