20815250

素因数分解:

$2^1\times 5^3\times {\mathrm{139}}^1\times {\mathrm{599}}^1$

素因数の和:755

約数の個数: 32

約数和(自身を含む): 39312000

約数和(自身を除く): 18496750

約数列:

[1, 2, 5, 10, 25, 50, 125, 139, 250, 278, 599, 695, 1198, 1390, 2995, 3475, 5990, 6950, 14975, 17375, 29950, 34750, 74875, 83261, 149750, 166522, 416305, 832610, 2081525, 4163050, 10407625, 20815250]

約数ペア:

[(1, 20815250), (2, 10407625), (5, 4163050), (10, 2081525), (25, 832610), (50, 416305), (125, 166522), (139, 149750), (250, 83261), (278, 74875), (599, 34750), (695, 29950), (1198, 17375), (1390, 14975), (2995, 6950), (3475, 5990)]