21000901284

素因数分解:

$2^2\times 3^2\times {\mathrm{11}}^1\times {\mathrm{1229}}^1\times {\mathrm{43151}}^1$

素因数の和:44401

約数の個数: 72

約数和(自身を含む): 57960040320

約数和(自身を除く): 36959139036

約数列:

[1, 2, 3, 4, 6, 9, 11, 12, 18, 22, 33, 36, 44, 66, 99, 132, 198, 396, 1229, 2458, 3687, 4916, 7374, 11061, 13519, 14748, 22122, 27038, 40557, 43151, 44244, 54076, 81114, 86302, 121671, 129453, 162228, 172604, 243342, 258906, 388359, 474661, 486684, 517812, 776718, 949322, 1423983, 1553436, 1898644, 2847966, 4271949, 5695932, 8543898, 17087796, 53032579, 106065158, 159097737, 212130316, 318195474, 477293211, 583358369, 636390948, 954586422, 1166716738, 1750075107, 1909172844, 2333433476, 3500150214, 5250225321, 7000300428, 10500450642, 21000901284]

約数ペア:

[(1, 21000901284), (2, 10500450642), (3, 7000300428), (4, 5250225321), (6, 3500150214), (9, 2333433476), (11, 1909172844), (12, 1750075107), (18, 1166716738), (22, 954586422), (33, 636390948), (36, 583358369), (44, 477293211), (66, 318195474), (99, 212130316), (132, 159097737), (198, 106065158), (396, 53032579), (1229, 17087796), (2458, 8543898), (3687, 5695932), (4916, 4271949), (7374, 2847966), (11061, 1898644), (13519, 1553436), (14748, 1423983), (22122, 949322), (27038, 776718), (40557, 517812), (43151, 486684), (44244, 474661), (54076, 388359), (81114, 258906), (86302, 243342), (121671, 172604), (129453, 162228)]