1678640

素因数分解:

$2^4\times 5^1\times {\mathrm{20983}}^1$

素因数の和:20996

約数の個数: 20

約数和(自身を含む): 3903024

約数和(自身を除く): 2224384

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 20983, 41966, 83932, 104915, 167864, 209830, 335728, 419660, 839320, 1678640]

約数ペア:

[(1, 1678640), (2, 839320), (4, 419660), (5, 335728), (8, 209830), (10, 167864), (16, 104915), (20, 83932), (40, 41966), (80, 20983)]