140620

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{89}}^1$

素因数の和:177

約数の個数: 24

約数和(自身を含む): 302400

約数和(自身を除く): 161780

約数列:

[1, 2, 4, 5, 10, 20, 79, 89, 158, 178, 316, 356, 395, 445, 790, 890, 1580, 1780, 7031, 14062, 28124, 35155, 70310, 140620]

約数ペア:

[(1, 140620), (2, 70310), (4, 35155), (5, 28124), (10, 14062), (20, 7031), (79, 1780), (89, 1580), (158, 890), (178, 790), (316, 445), (356, 395)]