720171

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{523}}^1$

素因数の和:552

約数の個数: 20

約数和(自身を含む): 1141272

約数和(自身を除く): 421101

約数列:

[1, 3, 9, 17, 27, 51, 81, 153, 459, 523, 1377, 1569, 4707, 8891, 14121, 26673, 42363, 80019, 240057, 720171]

約数ペア:

[(1, 720171), (3, 240057), (9, 80019), (17, 42363), (27, 26673), (51, 14121), (81, 8891), (153, 4707), (459, 1569), (523, 1377)]