81317379

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{109}}^1$

素因数の和:220

約数の個数: 64

約数和(自身を含む): 134830080

約数和(自身を除く): 53512701

約数列:

[1, 3, 11, 13, 33, 37, 39, 47, 109, 111, 141, 143, 327, 407, 429, 481, 517, 611, 1199, 1221, 1417, 1443, 1551, 1739, 1833, 3597, 4033, 4251, 5123, 5217, 5291, 6721, 12099, 15369, 15587, 15873, 19129, 20163, 22607, 44363, 46761, 52429, 56353, 57387, 66599, 67821, 133089, 157287, 169059, 189551, 199797, 248677, 568653, 576719, 732589, 746031, 1730157, 2085061, 2197767, 2464163, 6255183, 7392489, 27105793, 81317379]

約数ペア:

[(1, 81317379), (3, 27105793), (11, 7392489), (13, 6255183), (33, 2464163), (37, 2197767), (39, 2085061), (47, 1730157), (109, 746031), (111, 732589), (141, 576719), (143, 568653), (327, 248677), (407, 199797), (429, 189551), (481, 169059), (517, 157287), (611, 133089), (1199, 67821), (1221, 66599), (1417, 57387), (1443, 56353), (1551, 52429), (1739, 46761), (1833, 44363), (3597, 22607), (4033, 20163), (4251, 19129), (5123, 15873), (5217, 15587), (5291, 15369), (6721, 12099)]