20313209

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{281}}^1\times {\mathrm{449}}^1$

素因数の和:760

約数の個数: 16

約数和(自身を含む): 24364800

約数和(自身を除く): 4051591

約数列:

[1, 7, 23, 161, 281, 449, 1967, 3143, 6463, 10327, 45241, 72289, 126169, 883183, 2901887, 20313209]

約数ペア:

[(1, 20313209), (7, 2901887), (23, 883183), (161, 126169), (281, 72289), (449, 45241), (1967, 10327), (3143, 6463)]