2171440

素因数分解:

$2^4\times 5^1\times {\mathrm{27143}}^1$

素因数の和:27156

約数の個数: 20

約数和(自身を含む): 5048784

約数和(自身を除く): 2877344

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 27143, 54286, 108572, 135715, 217144, 271430, 434288, 542860, 1085720, 2171440]

約数ペア:

[(1, 2171440), (2, 1085720), (4, 542860), (5, 434288), (8, 271430), (10, 217144), (16, 135715), (20, 108572), (40, 54286), (80, 27143)]