19747521

素因数分解:

$3^2\times {\mathrm{29}}^2\times {\mathrm{2609}}^1$

素因数の和:2673

約数の個数: 18

約数和(自身を含む): 29553030

約数和(自身を除く): 9805509

約数列:

[1, 3, 9, 29, 87, 261, 841, 2523, 2609, 7569, 7827, 23481, 75661, 226983, 680949, 2194169, 6582507, 19747521]

約数ペア:

[(1, 19747521), (3, 6582507), (9, 2194169), (29, 680949), (87, 226983), (261, 75661), (841, 23481), (2523, 7827), (2609, 7569)]