81491931

素因数分解:

$3^2\times {\mathrm{17}}^3\times {\mathrm{19}}^1\times {\mathrm{97}}^1$

素因数の和:173

約数の個数: 48

約数和(自身を含む): 133005600

約数和(自身を除く): 51513669

約数列:

[1, 3, 9, 17, 19, 51, 57, 97, 153, 171, 289, 291, 323, 867, 873, 969, 1649, 1843, 2601, 2907, 4913, 4947, 5491, 5529, 14739, 14841, 16473, 16587, 28033, 31331, 44217, 49419, 84099, 93347, 93993, 252297, 280041, 281979, 476561, 532627, 840123, 1429683, 1597881, 4289049, 4793643, 9054659, 27163977, 81491931]

約数ペア:

[(1, 81491931), (3, 27163977), (9, 9054659), (17, 4793643), (19, 4289049), (51, 1597881), (57, 1429683), (97, 840123), (153, 532627), (171, 476561), (289, 281979), (291, 280041), (323, 252297), (867, 93993), (873, 93347), (969, 84099), (1649, 49419), (1843, 44217), (2601, 31331), (2907, 28033), (4913, 16587), (4947, 16473), (5491, 14841), (5529, 14739)]