81570489

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{1181}}^1$

素因数の和:1238

約数の個数: 64

約数和(自身を含む): 152506368

約数和(自身を除く): 70935879

約数列:

[1, 3, 7, 11, 13, 21, 23, 33, 39, 69, 77, 91, 143, 161, 231, 253, 273, 299, 429, 483, 759, 897, 1001, 1181, 1771, 2093, 3003, 3289, 3543, 5313, 6279, 8267, 9867, 12991, 15353, 23023, 24801, 27163, 38973, 46059, 69069, 81489, 90937, 107471, 168883, 190141, 272811, 298793, 322413, 353119, 506649, 570423, 896379, 1059357, 1182181, 2091551, 2471833, 3546543, 3884309, 6274653, 7415499, 11652927, 27190163, 81570489]

約数ペア:

[(1, 81570489), (3, 27190163), (7, 11652927), (11, 7415499), (13, 6274653), (21, 3884309), (23, 3546543), (33, 2471833), (39, 2091551), (69, 1182181), (77, 1059357), (91, 896379), (143, 570423), (161, 506649), (231, 353119), (253, 322413), (273, 298793), (299, 272811), (429, 190141), (483, 168883), (759, 107471), (897, 90937), (1001, 81489), (1181, 69069), (1771, 46059), (2093, 38973), (3003, 27163), (3289, 24801), (3543, 23023), (5313, 15353), (6279, 12991), (8267, 9867)]