8660840

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{5281}}^1$

素因数の和:5333

約数の個数: 32

約数和(自身を含む): 19965960

約数和(自身を除く): 11305120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 5281, 10562, 21124, 26405, 42248, 52810, 105620, 211240, 216521, 433042, 866084, 1082605, 1732168, 2165210, 4330420, 8660840]

約数ペア:

[(1, 8660840), (2, 4330420), (4, 2165210), (5, 1732168), (8, 1082605), (10, 866084), (20, 433042), (40, 216521), (41, 211240), (82, 105620), (164, 52810), (205, 42248), (328, 26405), (410, 21124), (820, 10562), (1640, 5281)]