1971891649

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{181}}^1\times {\mathrm{6301}}^1$

素因数の和:6521

約数の個数: 32

約数和(自身を含む): 2569199360

約数和(自身を除く): 597307711

約数列:

[1, 7, 13, 19, 91, 133, 181, 247, 1267, 1729, 2353, 3439, 6301, 16471, 24073, 44107, 44707, 81913, 119719, 312949, 573391, 838033, 1140481, 1556347, 7983367, 10894429, 14826253, 21669139, 103783771, 151683973, 281698807, 1971891649]

約数ペア:

[(1, 1971891649), (7, 281698807), (13, 151683973), (19, 103783771), (91, 21669139), (133, 14826253), (181, 10894429), (247, 7983367), (1267, 1556347), (1729, 1140481), (2353, 838033), (3439, 573391), (6301, 312949), (16471, 119719), (24073, 81913), (44107, 44707)]