129341720

素因数分解:

$2^3\times 5^1\times {\mathrm{173}}^1\times {\mathrm{18691}}^1$

素因数の和:18875

約数の個数: 32

約数和(自身を含む): 292716720

約数和(自身を除く): 163375000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 173, 346, 692, 865, 1384, 1730, 3460, 6920, 18691, 37382, 74764, 93455, 149528, 186910, 373820, 747640, 3233543, 6467086, 12934172, 16167715, 25868344, 32335430, 64670860, 129341720]

約数ペア:

[(1, 129341720), (2, 64670860), (4, 32335430), (5, 25868344), (8, 16167715), (10, 12934172), (20, 6467086), (40, 3233543), (173, 747640), (346, 373820), (692, 186910), (865, 149528), (1384, 93455), (1730, 74764), (3460, 37382), (6920, 18691)]