20399652

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{13}}^2\times {\mathrm{479}}^1$

素因数の和:522

約数の個数: 108

約数和(自身を含む): 63947520

約数和(自身を除く): 43547868

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 13, 14, 18, 21, 26, 28, 36, 39, 42, 52, 63, 78, 84, 91, 117, 126, 156, 169, 182, 234, 252, 273, 338, 364, 468, 479, 507, 546, 676, 819, 958, 1014, 1092, 1183, 1437, 1521, 1638, 1916, 2028, 2366, 2874, 3042, 3276, 3353, 3549, 4311, 4732, 5748, 6084, 6227, 6706, 7098, 8622, 10059, 10647, 12454, 13412, 14196, 17244, 18681, 20118, 21294, 24908, 30177, 37362, 40236, 42588, 43589, 56043, 60354, 74724, 80951, 87178, 112086, 120708, 130767, 161902, 174356, 224172, 242853, 261534, 323804, 392301, 485706, 523068, 566657, 728559, 784602, 971412, 1133314, 1457118, 1569204, 1699971, 2266628, 2914236, 3399942, 5099913, 6799884, 10199826, 20399652]

約数ペア:

[(1, 20399652), (2, 10199826), (3, 6799884), (4, 5099913), (6, 3399942), (7, 2914236), (9, 2266628), (12, 1699971), (13, 1569204), (14, 1457118), (18, 1133314), (21, 971412), (26, 784602), (28, 728559), (36, 566657), (39, 523068), (42, 485706), (52, 392301), (63, 323804), (78, 261534), (84, 242853), (91, 224172), (117, 174356), (126, 161902), (156, 130767), (169, 120708), (182, 112086), (234, 87178), (252, 80951), (273, 74724), (338, 60354), (364, 56043), (468, 43589), (479, 42588), (507, 40236), (546, 37362), (676, 30177), (819, 24908), (958, 21294), (1014, 20118), (1092, 18681), (1183, 17244), (1437, 14196), (1521, 13412), (1638, 12454), (1916, 10647), (2028, 10059), (2366, 8622), (2874, 7098), (3042, 6706), (3276, 6227), (3353, 6084), (3549, 5748), (4311, 4732)]