217804977

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{541}}^1$

素因数の和:631

約数の個数: 64

約数和(自身を含む): 369080320

約数和(自身を除く): 151275343

約数列:

[1, 3, 9, 13, 27, 31, 37, 39, 93, 111, 117, 279, 333, 351, 403, 481, 541, 837, 999, 1147, 1209, 1443, 1623, 3441, 3627, 4329, 4869, 7033, 10323, 10881, 12987, 14607, 14911, 16771, 20017, 21099, 30969, 44733, 50313, 60051, 63297, 134199, 150939, 180153, 189891, 218023, 260221, 402597, 452817, 540459, 620527, 654069, 780663, 1861581, 1962207, 2341989, 5584743, 5886621, 7025967, 8066851, 16754229, 24200553, 72601659, 217804977]

約数ペア:

[(1, 217804977), (3, 72601659), (9, 24200553), (13, 16754229), (27, 8066851), (31, 7025967), (37, 5886621), (39, 5584743), (93, 2341989), (111, 1962207), (117, 1861581), (279, 780663), (333, 654069), (351, 620527), (403, 540459), (481, 452817), (541, 402597), (837, 260221), (999, 218023), (1147, 189891), (1209, 180153), (1443, 150939), (1623, 134199), (3441, 63297), (3627, 60051), (4329, 50313), (4869, 44733), (7033, 30969), (10323, 21099), (10881, 20017), (12987, 16771), (14607, 14911)]