18489891

素因数分解:

$3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{12401}}^1$

素因数の和:12482

約数の個数: 16

約数和(自身を含む): 28574208

約数和(自身を除く): 10084317

約数列:

[1, 3, 7, 21, 71, 213, 497, 1491, 12401, 37203, 86807, 260421, 880471, 2641413, 6163297, 18489891]

約数ペア:

[(1, 18489891), (3, 6163297), (7, 2641413), (21, 880471), (71, 260421), (213, 86807), (497, 37203), (1491, 12401)]