20756988

素因数分解:

$2^2\times 3^2\times 7^3\times {\mathrm{41}}^2$

素因数の和:113

約数の個数: 108

約数和(自身を含む): 62717200

約数和(自身を除く): 41960212

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 41, 42, 49, 63, 82, 84, 98, 123, 126, 147, 164, 196, 246, 252, 287, 294, 343, 369, 441, 492, 574, 588, 686, 738, 861, 882, 1029, 1148, 1372, 1476, 1681, 1722, 1764, 2009, 2058, 2583, 3087, 3362, 3444, 4018, 4116, 5043, 5166, 6027, 6174, 6724, 8036, 10086, 10332, 11767, 12054, 12348, 14063, 15129, 18081, 20172, 23534, 24108, 28126, 30258, 35301, 36162, 42189, 47068, 56252, 60516, 70602, 72324, 82369, 84378, 105903, 126567, 141204, 164738, 168756, 211806, 247107, 253134, 329476, 423612, 494214, 506268, 576583, 741321, 988428, 1153166, 1482642, 1729749, 2306332, 2965284, 3459498, 5189247, 6918996, 10378494, 20756988]

約数ペア:

[(1, 20756988), (2, 10378494), (3, 6918996), (4, 5189247), (6, 3459498), (7, 2965284), (9, 2306332), (12, 1729749), (14, 1482642), (18, 1153166), (21, 988428), (28, 741321), (36, 576583), (41, 506268), (42, 494214), (49, 423612), (63, 329476), (82, 253134), (84, 247107), (98, 211806), (123, 168756), (126, 164738), (147, 141204), (164, 126567), (196, 105903), (246, 84378), (252, 82369), (287, 72324), (294, 70602), (343, 60516), (369, 56252), (441, 47068), (492, 42189), (574, 36162), (588, 35301), (686, 30258), (738, 28126), (861, 24108), (882, 23534), (1029, 20172), (1148, 18081), (1372, 15129), (1476, 14063), (1681, 12348), (1722, 12054), (1764, 11767), (2009, 10332), (2058, 10086), (2583, 8036), (3087, 6724), (3362, 6174), (3444, 6027), (4018, 5166), (4116, 5043)]