21064509

素因数分解:

$3^3\times {\mathrm{331}}^1\times {\mathrm{2357}}^1$

素因数の和:2697

約数の個数: 16

約数和(自身を含む): 31314240

約数和(自身を除く): 10249731

約数列:

[1, 3, 9, 27, 331, 993, 2357, 2979, 7071, 8937, 21213, 63639, 780167, 2340501, 7021503, 21064509]

約数ペア:

[(1, 21064509), (3, 7021503), (9, 2340501), (27, 780167), (331, 63639), (993, 21213), (2357, 8937), (2979, 7071)]