21986289

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{62639}}^1$

素因数の和:62661

約数の個数: 16

約数和(自身を含む): 35078400

約数和(自身を除く): 13092111

約数列:

[1, 3, 9, 13, 27, 39, 117, 351, 62639, 187917, 563751, 814307, 1691253, 2442921, 7328763, 21986289]

約数ペア:

[(1, 21986289), (3, 7328763), (9, 2442921), (13, 1691253), (27, 814307), (39, 563751), (117, 187917), (351, 62639)]