17720961

素因数分解:

$3^1\times {\mathrm{71}}^1\times {\mathrm{271}}^1\times {\mathrm{307}}^1$

素因数の和:652

約数の個数: 16

約数和(自身を含む): 24127488

約数和(自身を除く): 6406527

約数列:

[1, 3, 71, 213, 271, 307, 813, 921, 19241, 21797, 57723, 65391, 83197, 249591, 5906987, 17720961]

約数ペア:

[(1, 17720961), (3, 5906987), (71, 249591), (213, 83197), (271, 65391), (307, 57723), (813, 21797), (921, 19241)]