81997551

素因数分解:

$3^2\times {\mathrm{59}}^1\times {\mathrm{307}}^1\times {\mathrm{503}}^1$

素因数の和:875

約数の個数: 24

約数和(自身を含む): 121080960

約数和(自身を除く): 39083409

約数列:

[1, 3, 9, 59, 177, 307, 503, 531, 921, 1509, 2763, 4527, 18113, 29677, 54339, 89031, 154421, 163017, 267093, 463263, 1389789, 9110839, 27332517, 81997551]

約数ペア:

[(1, 81997551), (3, 27332517), (9, 9110839), (59, 1389789), (177, 463263), (307, 267093), (503, 163017), (531, 154421), (921, 89031), (1509, 54339), (2763, 29677), (4527, 18113)]