257642021

素因数分解:

$7^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{557}}^1$

素因数の和:630

約数の個数: 48

約数和(自身を含む): 352905984

約数和(自身を除く): 95263963

約数列:

[1, 7, 13, 17, 23, 91, 119, 161, 169, 221, 299, 391, 557, 1183, 1547, 2093, 2737, 2873, 3887, 3899, 5083, 7241, 9469, 12811, 20111, 27209, 35581, 50687, 66079, 66283, 89677, 94133, 123097, 166543, 217787, 462553, 658931, 861679, 1165801, 1524509, 1600261, 2165059, 2831231, 11201827, 15155413, 19818617, 36806003, 257642021]

約数ペア:

[(1, 257642021), (7, 36806003), (13, 19818617), (17, 15155413), (23, 11201827), (91, 2831231), (119, 2165059), (161, 1600261), (169, 1524509), (221, 1165801), (299, 861679), (391, 658931), (557, 462553), (1183, 217787), (1547, 166543), (2093, 123097), (2737, 94133), (2873, 89677), (3887, 66283), (3899, 66079), (5083, 50687), (7241, 35581), (9469, 27209), (12811, 20111)]