81307023

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{677}}^1$

素因数の和:756

約数の個数: 48

約数和(自身を含む): 136033920

約数和(自身を除く): 54726897

約数列:

[1, 3, 7, 19, 21, 43, 49, 57, 129, 133, 147, 301, 399, 677, 817, 903, 931, 2031, 2107, 2451, 2793, 4739, 5719, 6321, 12863, 14217, 17157, 29111, 33173, 38589, 40033, 87333, 90041, 99519, 120099, 203777, 270123, 553109, 611331, 630287, 1426439, 1659327, 1890861, 3871763, 4279317, 11615289, 27102341, 81307023]

約数ペア:

[(1, 81307023), (3, 27102341), (7, 11615289), (19, 4279317), (21, 3871763), (43, 1890861), (49, 1659327), (57, 1426439), (129, 630287), (133, 611331), (147, 553109), (301, 270123), (399, 203777), (677, 120099), (817, 99519), (903, 90041), (931, 87333), (2031, 40033), (2107, 38589), (2451, 33173), (2793, 29111), (4739, 17157), (5719, 14217), (6321, 12863)]