81379396

素因数分解:

$2^2\times 7^2\times {\mathrm{415201}}^1$

素因数の和:415219

約数の個数: 18

約数和(自身を含む): 165665598

約数和(自身を除く): 84286202

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 415201, 830402, 1660804, 2906407, 5812814, 11625628, 20344849, 40689698, 81379396]

約数ペア:

[(1, 81379396), (2, 40689698), (4, 20344849), (7, 11625628), (14, 5812814), (28, 2906407), (49, 1660804), (98, 830402), (196, 415201)]