81271132

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{499}}^1\times {\mathrm{2143}}^1$

素因数の和:2665

約数の個数: 24

約数和(自身を含む): 150080000

約数和(自身を除く): 68808868

約数列:

[1, 2, 4, 19, 38, 76, 499, 998, 1996, 2143, 4286, 8572, 9481, 18962, 37924, 40717, 81434, 162868, 1069357, 2138714, 4277428, 20317783, 40635566, 81271132]

約数ペア:

[(1, 81271132), (2, 40635566), (4, 20317783), (19, 4277428), (38, 2138714), (76, 1069357), (499, 162868), (998, 81434), (1996, 40717), (2143, 37924), (4286, 18962), (8572, 9481)]