18128721

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{4513}}^1$

素因数の和:4632

約数の個数: 16

約数和(自身を含む): 26289536

約数和(自身を除く): 8160815

約数列:

[1, 3, 13, 39, 103, 309, 1339, 4017, 4513, 13539, 58669, 176007, 464839, 1394517, 6042907, 18128721]

約数ペア:

[(1, 18128721), (3, 6042907), (13, 1394517), (39, 464839), (103, 176007), (309, 58669), (1339, 13539), (4017, 4513)]