81431777

素因数分解:

$7^2\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{1861}}^1$

素因数の和:1941

約数の個数: 24

約数和(自身を含む): 101888640

約数和(自身を除く): 20456863

約数列:

[1, 7, 19, 47, 49, 133, 329, 893, 931, 1861, 2303, 6251, 13027, 35359, 43757, 87467, 91189, 247513, 612269, 1661873, 1732591, 4285883, 11633111, 81431777]

約数ペア:

[(1, 81431777), (7, 11633111), (19, 4285883), (47, 1732591), (49, 1661873), (133, 612269), (329, 247513), (893, 91189), (931, 87467), (1861, 43757), (2303, 35359), (6251, 13027)]