18120417

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{23321}}^1$

素因数の和:23368

約数の個数: 16

約数和(自身を含む): 28359552

約数和(自身を除く): 10239135

約数列:

[1, 3, 7, 21, 37, 111, 259, 777, 23321, 69963, 163247, 489741, 862877, 2588631, 6040139, 18120417]

約数ペア:

[(1, 18120417), (3, 6040139), (7, 2588631), (21, 862877), (37, 489741), (111, 163247), (259, 69963), (777, 23321)]