20392421

素因数分解:

$7^1\times {\mathrm{23}}^2\times {\mathrm{5507}}^1$

素因数の和:5560

約数の個数: 12

約数和(自身を含む): 24367392

約数和(自身を除く): 3974971

約数列:

[1, 7, 23, 161, 529, 3703, 5507, 38549, 126661, 886627, 2913203, 20392421]

約数ペア:

[(1, 20392421), (7, 2913203), (23, 886627), (161, 126661), (529, 38549), (3703, 5507)]