129137560

素因数分解:

$2^3\times 5^1\times {\mathrm{3228439}}^1$

素因数の和:3228450

約数の個数: 16

約数和(自身を含む): 290559600

約数和(自身を除く): 161422040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 3228439, 6456878, 12913756, 16142195, 25827512, 32284390, 64568780, 129137560]

約数ペア:

[(1, 129137560), (2, 64568780), (4, 32284390), (5, 25827512), (8, 16142195), (10, 12913756), (20, 6456878), (40, 3228439)]