20831372

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{4091}}^1$

素因数の和:4181

約数の個数: 24

約数和(自身を含む): 38955840

約数和(自身を除く): 18124468

約数列:

[1, 2, 4, 19, 38, 67, 76, 134, 268, 1273, 2546, 4091, 5092, 8182, 16364, 77729, 155458, 274097, 310916, 548194, 1096388, 5207843, 10415686, 20831372]

約数ペア:

[(1, 20831372), (2, 10415686), (4, 5207843), (19, 1096388), (38, 548194), (67, 310916), (76, 274097), (134, 155458), (268, 77729), (1273, 16364), (2546, 8182), (4091, 5092)]