20157501925

素因数分解:

$5^2\times {\mathrm{11}}^2\times {\mathrm{53}}^1\times {\mathrm{59}}^1\times {\mathrm{2131}}^1$

素因数の和:2275

約数の個数: 72

約数和(自身を含む): 28480364640

約数和(自身を除く): 8322862715

約数列:

[1, 5, 11, 25, 53, 55, 59, 121, 265, 275, 295, 583, 605, 649, 1325, 1475, 2131, 2915, 3025, 3127, 3245, 6413, 7139, 10655, 14575, 15635, 16225, 23441, 32065, 34397, 35695, 53275, 78175, 112943, 117205, 125729, 160325, 171985, 178475, 257851, 378367, 564715, 586025, 628645, 859925, 1242373, 1289255, 1383019, 1891835, 2823575, 3143225, 6211865, 6446275, 6663637, 6915095, 9459175, 13666103, 15213209, 31059325, 33318185, 34575475, 68330515, 73300007, 76066045, 166590925, 341652575, 366500035, 380330225, 806300077, 1832500175, 4031500385, 20157501925]

約数ペア:

[(1, 20157501925), (5, 4031500385), (11, 1832500175), (25, 806300077), (53, 380330225), (55, 366500035), (59, 341652575), (121, 166590925), (265, 76066045), (275, 73300007), (295, 68330515), (583, 34575475), (605, 33318185), (649, 31059325), (1325, 15213209), (1475, 13666103), (2131, 9459175), (2915, 6915095), (3025, 6663637), (3127, 6446275), (3245, 6211865), (6413, 3143225), (7139, 2823575), (10655, 1891835), (14575, 1383019), (15635, 1289255), (16225, 1242373), (23441, 859925), (32065, 628645), (34397, 586025), (35695, 564715), (53275, 378367), (78175, 257851), (112943, 178475), (117205, 171985), (125729, 160325)]