66688360

素因数分解:

$2^3\times 5^1\times {\mathrm{1667209}}^1$

素因数の和:1667220

約数の個数: 16

約数和(自身を含む): 150048900

約数和(自身を除く): 83360540

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1667209, 3334418, 6668836, 8336045, 13337672, 16672090, 33344180, 66688360]

約数ペア:

[(1, 66688360), (2, 33344180), (4, 16672090), (5, 13337672), (8, 8336045), (10, 6668836), (20, 3334418), (40, 1667209)]