28120851

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{853}}^1$

素因数の和:913

約数の個数: 40

約数和(自身を含む): 47120304

約数和(自身を除く): 18999453

約数列:

[1, 3, 9, 11, 27, 33, 37, 81, 99, 111, 297, 333, 407, 853, 891, 999, 1221, 2559, 2997, 3663, 7677, 9383, 10989, 23031, 28149, 31561, 32967, 69093, 84447, 94683, 253341, 284049, 347171, 760023, 852147, 1041513, 2556441, 3124539, 9373617, 28120851]

約数ペア:

[(1, 28120851), (3, 9373617), (9, 3124539), (11, 2556441), (27, 1041513), (33, 852147), (37, 760023), (81, 347171), (99, 284049), (111, 253341), (297, 94683), (333, 84447), (407, 69093), (853, 32967), (891, 31561), (999, 28149), (1221, 23031), (2559, 10989), (2997, 9383), (3663, 7677)]