278766279

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{223}}^1$

素因数の和:330

約数の個数: 80

約数和(自身を含む): 483969024

約数和(自身を除く): 205202745

約数列:

[1, 3, 9, 11, 23, 27, 33, 61, 69, 81, 99, 183, 207, 223, 253, 297, 549, 621, 669, 671, 759, 891, 1403, 1647, 1863, 2007, 2013, 2277, 2453, 4209, 4941, 5129, 6021, 6039, 6831, 7359, 12627, 13603, 15387, 15433, 18063, 18117, 20493, 22077, 37881, 40809, 46161, 46299, 54351, 56419, 66231, 113643, 122427, 138483, 138897, 149633, 169257, 198693, 312869, 367281, 415449, 416691, 448899, 507771, 938607, 1101843, 1250073, 1346697, 1523313, 2815821, 3441559, 4040091, 4569939, 8447463, 10324677, 12120273, 25342389, 30974031, 92922093, 278766279]

約数ペア:

[(1, 278766279), (3, 92922093), (9, 30974031), (11, 25342389), (23, 12120273), (27, 10324677), (33, 8447463), (61, 4569939), (69, 4040091), (81, 3441559), (99, 2815821), (183, 1523313), (207, 1346697), (223, 1250073), (253, 1101843), (297, 938607), (549, 507771), (621, 448899), (669, 416691), (671, 415449), (759, 367281), (891, 312869), (1403, 198693), (1647, 169257), (1863, 149633), (2007, 138897), (2013, 138483), (2277, 122427), (2453, 113643), (4209, 66231), (4941, 56419), (5129, 54351), (6021, 46299), (6039, 46161), (6831, 40809), (7359, 37881), (12627, 22077), (13603, 20493), (15387, 18117), (15433, 18063)]