1645020009

素因数分解:

$3^4\times {\mathrm{2389}}^1\times {\mathrm{8501}}^1$

素因数の和:10902

約数の個数: 20

約数和(自身を含む): 2458693380

約数和(自身を除く): 813673371

約数列:

[1, 3, 9, 27, 81, 2389, 7167, 8501, 21501, 25503, 64503, 76509, 193509, 229527, 688581, 20308889, 60926667, 182780001, 548340003, 1645020009]

約数ペア:

[(1, 1645020009), (3, 548340003), (9, 182780001), (27, 60926667), (81, 20308889), (2389, 688581), (7167, 229527), (8501, 193509), (21501, 76509), (25503, 64503)]