21180677

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{293}}^1\times {\mathrm{449}}^1$

素因数の和:772

約数の個数: 16

約数和(自身を含む): 25401600

約数和(自身を除く): 4220923

約数列:

[1, 7, 23, 161, 293, 449, 2051, 3143, 6739, 10327, 47173, 72289, 131557, 920899, 3025811, 21180677]

約数ペア:

[(1, 21180677), (7, 3025811), (23, 920899), (161, 131557), (293, 72289), (449, 47173), (2051, 10327), (3143, 6739)]