18215638

素因数分解:

$2^1\times 7^1\times {\mathrm{647}}^1\times {\mathrm{2011}}^1$

素因数の和:2667

約数の個数: 16

約数和(自身を含む): 31290624

約数和(自身を除く): 13074986

約数列:

[1, 2, 7, 14, 647, 1294, 2011, 4022, 4529, 9058, 14077, 28154, 1301117, 2602234, 9107819, 18215638]

約数ペア:

[(1, 18215638), (2, 9107819), (7, 2602234), (14, 1301117), (647, 28154), (1294, 14077), (2011, 9058), (4022, 4529)]