201638440

素因数分解:

$2^3\times 5^1\times {\mathrm{5040961}}^1$

素因数の和:5040972

約数の個数: 16

約数和(自身を含む): 453686580

約数和(自身を除く): 252048140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 5040961, 10081922, 20163844, 25204805, 40327688, 50409610, 100819220, 201638440]

約数ペア:

[(1, 201638440), (2, 100819220), (4, 50409610), (5, 40327688), (8, 25204805), (10, 20163844), (20, 10081922), (40, 5040961)]