1978778875

素因数分解:

$5^3\times {\mathrm{59}}^1\times {\mathrm{71}}^1\times {\mathrm{3779}}^1$

素因数の和:3924

約数の個数: 32

約数和(自身を含む): 2547417600

約数和(自身を除く): 568638725

約数列:

[1, 5, 25, 59, 71, 125, 295, 355, 1475, 1775, 3779, 4189, 7375, 8875, 18895, 20945, 94475, 104725, 222961, 268309, 472375, 523625, 1114805, 1341545, 5574025, 6707725, 15830231, 27870125, 33538625, 79151155, 395755775, 1978778875]

約数ペア:

[(1, 1978778875), (5, 395755775), (25, 79151155), (59, 33538625), (71, 27870125), (125, 15830231), (295, 6707725), (355, 5574025), (1475, 1341545), (1775, 1114805), (3779, 523625), (4189, 472375), (7375, 268309), (8875, 222961), (18895, 104725), (20945, 94475)]