20736460

素因数分解:

$2^2\times 5^1\times {\mathrm{487}}^1\times {\mathrm{2129}}^1$

素因数の和:2625

約数の個数: 24

約数和(自身を含む): 43656480

約数和(自身を除く): 22920020

約数列:

[1, 2, 4, 5, 10, 20, 487, 974, 1948, 2129, 2435, 4258, 4870, 8516, 9740, 10645, 21290, 42580, 1036823, 2073646, 4147292, 5184115, 10368230, 20736460]

約数ペア:

[(1, 20736460), (2, 10368230), (4, 5184115), (5, 4147292), (10, 2073646), (20, 1036823), (487, 42580), (974, 21290), (1948, 10645), (2129, 9740), (2435, 8516), (4258, 4870)]