201640

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^2$

素因数の和:153

約数の個数: 24

約数和(自身を含む): 460170

約数和(自身を除く): 258530

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 5041, 10082, 20164, 25205, 40328, 50410, 100820, 201640]

約数ペア:

[(1, 201640), (2, 100820), (4, 50410), (5, 40328), (8, 25205), (10, 20164), (20, 10082), (40, 5041), (71, 2840), (142, 1420), (284, 710), (355, 568)]