19873720321

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{233}}^1\times {\mathrm{293}}^1\times {\mathrm{457}}^1$

素因数の和:1010

約数の個数: 48

約数和(自身を含む): 25143837264

約数和(自身を除く): 5270116943

約数列:

[1, 7, 13, 49, 91, 233, 293, 457, 637, 1631, 2051, 3029, 3199, 3809, 5941, 11417, 14357, 21203, 22393, 26663, 41587, 68269, 106481, 133901, 148421, 186641, 291109, 477883, 745367, 887497, 937307, 1384253, 1740713, 3345181, 5217569, 6212479, 6561149, 9689771, 12184991, 31198933, 43487353, 67828397, 85294937, 218392531, 405586129, 1528747717, 2839102903, 19873720321]

約数ペア:

[(1, 19873720321), (7, 2839102903), (13, 1528747717), (49, 405586129), (91, 218392531), (233, 85294937), (293, 67828397), (457, 43487353), (637, 31198933), (1631, 12184991), (2051, 9689771), (3029, 6561149), (3199, 6212479), (3809, 5217569), (5941, 3345181), (11417, 1740713), (14357, 1384253), (21203, 937307), (22393, 887497), (26663, 745367), (41587, 477883), (68269, 291109), (106481, 186641), (133901, 148421)]