20122221

素因数分解:

$3^1\times 7^1\times {\mathrm{617}}^1\times {\mathrm{1553}}^1$

素因数の和:2180

約数の個数: 16

約数和(自身を含む): 30731904

約数和(自身を除く): 10609683

約数列:

[1, 3, 7, 21, 617, 1553, 1851, 4319, 4659, 10871, 12957, 32613, 958201, 2874603, 6707407, 20122221]

約数ペア:

[(1, 20122221), (3, 6707407), (7, 2874603), (21, 958201), (617, 32613), (1553, 12957), (1851, 10871), (4319, 4659)]