28697727140

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{20209667}}^1$

素因数の和:20209747

約数の個数: 24

約数和(自身を含む): 61114036032

約数和(自身を除く): 32416308892

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 20209667, 40419334, 80838668, 101048335, 202096670, 404193340, 1434886357, 2869772714, 5739545428, 7174431785, 14348863570, 28697727140]

約数ペア:

[(1, 28697727140), (2, 14348863570), (4, 7174431785), (5, 5739545428), (10, 2869772714), (20, 1434886357), (71, 404193340), (142, 202096670), (284, 101048335), (355, 80838668), (710, 40419334), (1420, 20209667)]