20940983

素因数分解:

$7^2\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{271}}^1$

素因数の和:387

約数の個数: 24

約数和(自身を含む): 26046720

約数和(自身を除く): 5105737

約数列:

[1, 7, 19, 49, 83, 133, 271, 581, 931, 1577, 1897, 4067, 5149, 11039, 13279, 22493, 36043, 77273, 157451, 252301, 427367, 1102157, 2991569, 20940983]

約数ペア:

[(1, 20940983), (7, 2991569), (19, 1102157), (49, 427367), (83, 252301), (133, 157451), (271, 77273), (581, 36043), (931, 22493), (1577, 13279), (1897, 11039), (4067, 5149)]