20565534509

素因数分解:

${\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{53}}^2\times {\mathrm{491}}^1$

素因数の和:678

約数の個数: 48

約数和(自身を含む): 23979938304

約数和(自身を除く): 3414403795

約数列:

[1, 13, 31, 37, 53, 403, 481, 491, 689, 1147, 1643, 1961, 2809, 6383, 14911, 15221, 18167, 21359, 25493, 26023, 36517, 60791, 87079, 103933, 197873, 236171, 338299, 563177, 790283, 806713, 962851, 1132027, 1351129, 1379219, 3221923, 7321301, 10487269, 12517063, 17929847, 29848381, 41884999, 42755789, 51031103, 388028953, 555825257, 663404339, 1581964193, 20565534509]

約数ペア:

[(1, 20565534509), (13, 1581964193), (31, 663404339), (37, 555825257), (53, 388028953), (403, 51031103), (481, 42755789), (491, 41884999), (689, 29848381), (1147, 17929847), (1643, 12517063), (1961, 10487269), (2809, 7321301), (6383, 3221923), (14911, 1379219), (15221, 1351129), (18167, 1132027), (21359, 962851), (25493, 806713), (26023, 790283), (36517, 563177), (60791, 338299), (87079, 236171), (103933, 197873)]