21720132

素因数分解:

$2^2\times 3^2\times 7^3\times {\mathrm{1759}}^1$

素因数の和:1790

約数の個数: 72

約数和(自身を含む): 64064000

約数和(自身を除く): 42343868

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 49, 63, 84, 98, 126, 147, 196, 252, 294, 343, 441, 588, 686, 882, 1029, 1372, 1759, 1764, 2058, 3087, 3518, 4116, 5277, 6174, 7036, 10554, 12313, 12348, 15831, 21108, 24626, 31662, 36939, 49252, 63324, 73878, 86191, 110817, 147756, 172382, 221634, 258573, 344764, 443268, 517146, 603337, 775719, 1034292, 1206674, 1551438, 1810011, 2413348, 3102876, 3620022, 5430033, 7240044, 10860066, 21720132]

約数ペア:

[(1, 21720132), (2, 10860066), (3, 7240044), (4, 5430033), (6, 3620022), (7, 3102876), (9, 2413348), (12, 1810011), (14, 1551438), (18, 1206674), (21, 1034292), (28, 775719), (36, 603337), (42, 517146), (49, 443268), (63, 344764), (84, 258573), (98, 221634), (126, 172382), (147, 147756), (196, 110817), (252, 86191), (294, 73878), (343, 63324), (441, 49252), (588, 36939), (686, 31662), (882, 24626), (1029, 21108), (1372, 15831), (1759, 12348), (1764, 12313), (2058, 10554), (3087, 7036), (3518, 6174), (4116, 5277)]