81990605

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{691}}^1\times {\mathrm{1249}}^1$

素因数の和:1964

約数の個数: 16

約数和(自身を含む): 103800000

約数和(自身を除く): 21809395

約数列:

[1, 5, 19, 95, 691, 1249, 3455, 6245, 13129, 23731, 65645, 118655, 863059, 4315295, 16398121, 81990605]

約数ペア:

[(1, 81990605), (5, 16398121), (19, 4315295), (95, 863059), (691, 118655), (1249, 65645), (3455, 23731), (6245, 13129)]