7828420

素因数分解:

$2^2\times 5^1\times {\mathrm{509}}^1\times {\mathrm{769}}^1$

素因数の和:1287

約数の個数: 24

約数和(自身を含む): 16493400

約数和(自身を除く): 8664980

約数列:

[1, 2, 4, 5, 10, 20, 509, 769, 1018, 1538, 2036, 2545, 3076, 3845, 5090, 7690, 10180, 15380, 391421, 782842, 1565684, 1957105, 3914210, 7828420]

約数ペア:

[(1, 7828420), (2, 3914210), (4, 1957105), (5, 1565684), (10, 782842), (20, 391421), (509, 15380), (769, 10180), (1018, 7690), (1538, 5090), (2036, 3845), (2545, 3076)]