20998755

素因数分解:

$3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{16091}}^1$

素因数の和:16131

約数の個数: 24

約数和(自身を含む): 37655280

約数和(自身を除く): 16656525

約数列:

[1, 3, 5, 9, 15, 29, 45, 87, 145, 261, 435, 1305, 16091, 48273, 80455, 144819, 241365, 466639, 724095, 1399917, 2333195, 4199751, 6999585, 20998755]

約数ペア:

[(1, 20998755), (3, 6999585), (5, 4199751), (9, 2333195), (15, 1399917), (29, 724095), (45, 466639), (87, 241365), (145, 144819), (261, 80455), (435, 48273), (1305, 16091)]