256260888

素因数分解:

$2^3\times 3^3\times {\mathrm{13}}^1\times {\mathrm{263}}^1\times {\mathrm{347}}^1$

素因数の和:638

約数の個数: 128

約数和(自身を含む): 771724800

約数和(自身を除く): 515463912

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 18, 24, 26, 27, 36, 39, 52, 54, 72, 78, 104, 108, 117, 156, 216, 234, 263, 312, 347, 351, 468, 526, 694, 702, 789, 936, 1041, 1052, 1388, 1404, 1578, 2082, 2104, 2367, 2776, 2808, 3123, 3156, 3419, 4164, 4511, 4734, 6246, 6312, 6838, 7101, 8328, 9022, 9369, 9468, 10257, 12492, 13533, 13676, 14202, 18044, 18738, 18936, 20514, 24984, 27066, 27352, 28404, 30771, 36088, 37476, 40599, 41028, 54132, 56808, 61542, 74952, 81198, 82056, 91261, 92313, 108264, 121797, 123084, 162396, 182522, 184626, 243594, 246168, 273783, 324792, 365044, 369252, 487188, 547566, 730088, 738504, 821349, 974376, 1095132, 1186393, 1642698, 2190264, 2372786, 2464047, 3285396, 3559179, 4745572, 4928094, 6570792, 7118358, 9491144, 9856188, 10677537, 14236716, 19712376, 21355074, 28473432, 32032611, 42710148, 64065222, 85420296, 128130444, 256260888]

約数ペア:

[(1, 256260888), (2, 128130444), (3, 85420296), (4, 64065222), (6, 42710148), (8, 32032611), (9, 28473432), (12, 21355074), (13, 19712376), (18, 14236716), (24, 10677537), (26, 9856188), (27, 9491144), (36, 7118358), (39, 6570792), (52, 4928094), (54, 4745572), (72, 3559179), (78, 3285396), (104, 2464047), (108, 2372786), (117, 2190264), (156, 1642698), (216, 1186393), (234, 1095132), (263, 974376), (312, 821349), (347, 738504), (351, 730088), (468, 547566), (526, 487188), (694, 369252), (702, 365044), (789, 324792), (936, 273783), (1041, 246168), (1052, 243594), (1388, 184626), (1404, 182522), (1578, 162396), (2082, 123084), (2104, 121797), (2367, 108264), (2776, 92313), (2808, 91261), (3123, 82056), (3156, 81198), (3419, 74952), (4164, 61542), (4511, 56808), (4734, 54132), (6246, 41028), (6312, 40599), (6838, 37476), (7101, 36088), (8328, 30771), (9022, 28404), (9369, 27352), (9468, 27066), (10257, 24984), (12492, 20514), (13533, 18936), (13676, 18738), (14202, 18044)]