81990447

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{41}}^1\times {\mathrm{787}}^1$

素因数の和:860

約数の個数: 48

約数和(自身を含む): 140856576

約数和(自身を除く): 58866129

約数列:

[1, 3, 7, 11, 21, 33, 41, 77, 121, 123, 231, 287, 363, 451, 787, 847, 861, 1353, 2361, 2541, 3157, 4961, 5509, 8657, 9471, 14883, 16527, 25971, 32267, 34727, 60599, 95227, 96801, 104181, 181797, 225869, 285681, 354937, 666589, 677607, 1064811, 1999767, 2484559, 3904307, 7453677, 11712921, 27330149, 81990447]

約数ペア:

[(1, 81990447), (3, 27330149), (7, 11712921), (11, 7453677), (21, 3904307), (33, 2484559), (41, 1999767), (77, 1064811), (121, 677607), (123, 666589), (231, 354937), (287, 285681), (363, 225869), (451, 181797), (787, 104181), (847, 96801), (861, 95227), (1353, 60599), (2361, 34727), (2541, 32267), (3157, 25971), (4961, 16527), (5509, 14883), (8657, 9471)]