201640280

素因数分解:

$2^3\times 5^1\times {\mathrm{5041007}}^1$

素因数の和:5041018

約数の個数: 16

約数和(自身を含む): 453690720

約数和(自身を除く): 252050440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 5041007, 10082014, 20164028, 25205035, 40328056, 50410070, 100820140, 201640280]

約数ペア:

[(1, 201640280), (2, 100820140), (4, 50410070), (5, 40328056), (8, 25205035), (10, 20164028), (20, 10082014), (40, 5041007)]