129203440

素因数分解:

$2^4\times 5^1\times {\mathrm{1615043}}^1$

素因数の和:1615056

約数の個数: 20

約数和(自身を含む): 300398184

約数和(自身を除く): 171194744

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1615043, 3230086, 6460172, 8075215, 12920344, 16150430, 25840688, 32300860, 64601720, 129203440]

約数ペア:

[(1, 129203440), (2, 64601720), (4, 32300860), (5, 25840688), (8, 16150430), (10, 12920344), (16, 8075215), (20, 6460172), (40, 3230086), (80, 1615043)]