81963917

素因数分解:

$7^2\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{853}}^1$

素因数の和:957

約数の個数: 24

約数和(自身を含む): 99887256

約数和(自身を除く): 17923339

約数列:

[1, 7, 37, 49, 53, 259, 371, 853, 1813, 1961, 2597, 5971, 13727, 31561, 41797, 45209, 96089, 220927, 316463, 1546489, 1672733, 2215241, 11709131, 81963917]

約数ペア:

[(1, 81963917), (7, 11709131), (37, 2215241), (49, 1672733), (53, 1546489), (259, 316463), (371, 220927), (853, 96089), (1813, 45209), (1961, 41797), (2597, 31561), (5971, 13727)]