20121897

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{5557}}^1$

素因数の和:5648

約数の個数: 16

約数和(自身を含む): 28812672

約数和(自身を除く): 8690775

約数列:

[1, 3, 17, 51, 71, 213, 1207, 3621, 5557, 16671, 94469, 283407, 394547, 1183641, 6707299, 20121897]

約数ペア:

[(1, 20121897), (3, 6707299), (17, 1183641), (51, 394547), (71, 283407), (213, 94469), (1207, 16671), (3621, 5557)]