81265437

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{223}}^1\times {\mathrm{409}}^1$

素因数の和:655

約数の個数: 40

約数和(自身を含む): 133351680

約数和(自身を除く): 52086243

約数列:

[1, 3, 9, 11, 27, 33, 81, 99, 223, 297, 409, 669, 891, 1227, 2007, 2453, 3681, 4499, 6021, 7359, 11043, 13497, 18063, 22077, 33129, 40491, 66231, 91207, 121473, 198693, 273621, 364419, 820863, 1003277, 2462589, 3009831, 7387767, 9029493, 27088479, 81265437]

約数ペア:

[(1, 81265437), (3, 27088479), (9, 9029493), (11, 7387767), (27, 3009831), (33, 2462589), (81, 1003277), (99, 820863), (223, 364419), (297, 273621), (409, 198693), (669, 121473), (891, 91207), (1227, 66231), (2007, 40491), (2453, 33129), (3681, 22077), (4499, 18063), (6021, 13497), (7359, 11043)]