20851575

素因数分解:

$3^1\times 5^2\times {\mathrm{41}}^1\times {\mathrm{6781}}^1$

素因数の和:6835

約数の個数: 24

約数和(自身を含む): 35320656

約数和(自身を除く): 14469081

約数列:

[1, 3, 5, 15, 25, 41, 75, 123, 205, 615, 1025, 3075, 6781, 20343, 33905, 101715, 169525, 278021, 508575, 834063, 1390105, 4170315, 6950525, 20851575]

約数ペア:

[(1, 20851575), (3, 6950525), (5, 4170315), (15, 1390105), (25, 834063), (41, 508575), (75, 278021), (123, 169525), (205, 101715), (615, 33905), (1025, 20343), (3075, 6781)]