66440840

素因数分解:

$2^3\times 5^1\times {\mathrm{1661021}}^1$

素因数の和:1661032

約数の個数: 16

約数和(自身を含む): 149491980

約数和(自身を除く): 83051140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1661021, 3322042, 6644084, 8305105, 13288168, 16610210, 33220420, 66440840]

約数ペア:

[(1, 66440840), (2, 33220420), (4, 16610210), (5, 13288168), (8, 8305105), (10, 6644084), (20, 3322042), (40, 1661021)]