20840618

素因数分解:

$2^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{173}}^1$

素因数の和:302

約数の個数: 32

約数和(自身を含む): 34076160

約数和(自身を除く): 13235542

約数列:

[1, 2, 29, 31, 58, 62, 67, 134, 173, 346, 899, 1798, 1943, 2077, 3886, 4154, 5017, 5363, 10034, 10726, 11591, 23182, 60233, 120466, 155527, 311054, 336139, 359321, 672278, 718642, 10420309, 20840618]

約数ペア:

[(1, 20840618), (2, 10420309), (29, 718642), (31, 672278), (58, 359321), (62, 336139), (67, 311054), (134, 155527), (173, 120466), (346, 60233), (899, 23182), (1798, 11591), (1943, 10726), (2077, 10034), (3886, 5363), (4154, 5017)]