20840216

素因数分解:

$2^3\times {\mathrm{59}}^1\times {\mathrm{67}}^1\times {\mathrm{659}}^1$

素因数の和:791

約数の個数: 32

約数和(自身を含む): 40392000

約数和(自身を除く): 19551784

約数列:

[1, 2, 4, 8, 59, 67, 118, 134, 236, 268, 472, 536, 659, 1318, 2636, 3953, 5272, 7906, 15812, 31624, 38881, 44153, 77762, 88306, 155524, 176612, 311048, 353224, 2605027, 5210054, 10420108, 20840216]

約数ペア:

[(1, 20840216), (2, 10420108), (4, 5210054), (8, 2605027), (59, 353224), (67, 311048), (118, 176612), (134, 155524), (236, 88306), (268, 77762), (472, 44153), (536, 38881), (659, 31624), (1318, 15812), (2636, 7906), (3953, 5272)]