81980991

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{53269}}^1$

素因数の和:53300

約数の個数: 20

約数和(自身を含む): 128913400

約数和(自身を除く): 46932409

約数列:

[1, 3, 9, 19, 27, 57, 81, 171, 513, 1539, 53269, 159807, 479421, 1012111, 1438263, 3036333, 4314789, 9108999, 27326997, 81980991]

約数ペア:

[(1, 81980991), (3, 27326997), (9, 9108999), (19, 4314789), (27, 3036333), (57, 1438263), (81, 1012111), (171, 479421), (513, 159807), (1539, 53269)]