21749998

素因数分解:

$2^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1\times {\mathrm{1721}}^1$

素因数の和:1883

約数の個数: 16

約数和(自身を含む): 33475680

約数和(自身を除く): 11725682

約数列:

[1, 2, 71, 89, 142, 178, 1721, 3442, 6319, 12638, 122191, 153169, 244382, 306338, 10874999, 21749998]

約数ペア:

[(1, 21749998), (2, 10874999), (71, 306338), (89, 244382), (142, 153169), (178, 122191), (1721, 12638), (3442, 6319)]