648234009

素因数分解:

$3^4\times {\mathrm{109}}^1\times {\mathrm{73421}}^1$

素因数の和:73542

約数の個数: 20

約数和(自身を含む): 977246820

約数和(自身を除く): 329012811

約数列:

[1, 3, 9, 27, 81, 109, 327, 981, 2943, 8829, 73421, 220263, 660789, 1982367, 5947101, 8002889, 24008667, 72026001, 216078003, 648234009]

約数ペア:

[(1, 648234009), (3, 216078003), (9, 72026001), (27, 24008667), (81, 8002889), (109, 5947101), (327, 1982367), (981, 660789), (2943, 220263), (8829, 73421)]