79779987

素因数分解:

$3^2\times 7^2\times {\mathrm{180907}}^1$

素因数の和:180927

約数の個数: 18

約数和(自身を含む): 134052828

約数和(自身を除く): 54272841

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 180907, 542721, 1266349, 1628163, 3799047, 8864443, 11397141, 26593329, 79779987]

約数ペア:

[(1, 79779987), (3, 26593329), (7, 11397141), (9, 8864443), (21, 3799047), (49, 1628163), (63, 1266349), (147, 542721), (441, 180907)]