18328863

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{647}}^1$

素因数の和:747

約数の個数: 32

約数和(自身を含む): 29859840

約数和(自身を除く): 11530977

約数列:

[1, 3, 7, 19, 21, 57, 71, 133, 213, 399, 497, 647, 1349, 1491, 1941, 4047, 4529, 9443, 12293, 13587, 28329, 36879, 45937, 86051, 137811, 258153, 321559, 872803, 964677, 2618409, 6109621, 18328863]

約数ペア:

[(1, 18328863), (3, 6109621), (7, 2618409), (19, 964677), (21, 872803), (57, 321559), (71, 258153), (133, 137811), (213, 86051), (399, 45937), (497, 36879), (647, 28329), (1349, 13587), (1491, 12293), (1941, 9443), (4047, 4529)]