18337780

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{21323}}^1$

素因数の和:21375

約数の個数: 24

約数和(自身を含む): 39406752

約数和(自身を除く): 21068972

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 21323, 42646, 85292, 106615, 213230, 426460, 916889, 1833778, 3667556, 4584445, 9168890, 18337780]

約数ペア:

[(1, 18337780), (2, 9168890), (4, 4584445), (5, 3667556), (10, 1833778), (20, 916889), (43, 426460), (86, 213230), (172, 106615), (215, 85292), (430, 42646), (860, 21323)]