81963921

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{179}}^1\times {\mathrm{199}}^1$

素因数の和:453

約数の個数: 32

約数和(自身を含む): 120960000

約数和(自身を除く): 38996079

約数列:

[1, 3, 13, 39, 59, 177, 179, 199, 537, 597, 767, 2301, 2327, 2587, 6981, 7761, 10561, 11741, 31683, 35223, 35621, 106863, 137293, 152633, 411879, 457899, 463073, 1389219, 2101639, 6304917, 27321307, 81963921]

約数ペア:

[(1, 81963921), (3, 27321307), (13, 6304917), (39, 2101639), (59, 1389219), (177, 463073), (179, 457899), (199, 411879), (537, 152633), (597, 137293), (767, 106863), (2301, 35621), (2327, 35223), (2587, 31683), (6981, 11741), (7761, 10561)]