81470851

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{571}}^1$

素因数の和:715

約数の個数: 32

約数和(自身を含む): 108725760

約数和(自身を除く): 27254909

約数列:

[1, 7, 11, 17, 77, 109, 119, 187, 571, 763, 1199, 1309, 1853, 3997, 6281, 8393, 9707, 12971, 20383, 43967, 62239, 67949, 106777, 142681, 435673, 684629, 747439, 1058063, 4792403, 7406441, 11638693, 81470851]

約数ペア:

[(1, 81470851), (7, 11638693), (11, 7406441), (17, 4792403), (77, 1058063), (109, 747439), (119, 684629), (187, 435673), (571, 142681), (763, 106777), (1199, 67949), (1309, 62239), (1853, 43967), (3997, 20383), (6281, 12971), (8393, 9707)]