20711509

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{79}}^1$

素因数の和:209

約数の個数: 32

約数和(自身を含む): 26808320

約数和(自身を除く): 6096811

約数列:

[1, 7, 13, 43, 67, 79, 91, 301, 469, 553, 559, 871, 1027, 2881, 3397, 3913, 5293, 6097, 7189, 20167, 23779, 37051, 37453, 44161, 68809, 227599, 262171, 309127, 481663, 1593193, 2958787, 20711509]

約数ペア:

[(1, 20711509), (7, 2958787), (13, 1593193), (43, 481663), (67, 309127), (79, 262171), (91, 227599), (301, 68809), (469, 44161), (553, 37453), (559, 37051), (871, 23779), (1027, 20167), (2881, 7189), (3397, 6097), (3913, 5293)]