27286940

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{31729}}^1$

素因数の和:31781

約数の個数: 24

約数和(自身を含む): 58637040

約数和(自身を除く): 31350100

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 31729, 63458, 126916, 158645, 317290, 634580, 1364347, 2728694, 5457388, 6821735, 13643470, 27286940]

約数ペア:

[(1, 27286940), (2, 13643470), (4, 6821735), (5, 5457388), (10, 2728694), (20, 1364347), (43, 634580), (86, 317290), (172, 158645), (215, 126916), (430, 63458), (860, 31729)]