19748715

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{97}}^1\times {\mathrm{277}}^1$

素因数の和:396

約数の個数: 48

約数和(自身を含む): 37269792

約数和(自身を除く): 17521077

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 97, 105, 147, 245, 277, 291, 485, 679, 735, 831, 1385, 1455, 1939, 2037, 3395, 4155, 4753, 5817, 9695, 10185, 13573, 14259, 23765, 26869, 29085, 40719, 67865, 71295, 80607, 134345, 188083, 203595, 403035, 564249, 940415, 1316581, 2821245, 3949743, 6582905, 19748715]

約数ペア:

[(1, 19748715), (3, 6582905), (5, 3949743), (7, 2821245), (15, 1316581), (21, 940415), (35, 564249), (49, 403035), (97, 203595), (105, 188083), (147, 134345), (245, 80607), (277, 71295), (291, 67865), (485, 40719), (679, 29085), (735, 26869), (831, 23765), (1385, 14259), (1455, 13573), (1939, 10185), (2037, 9695), (3395, 5817), (4155, 4753)]