20976228

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{337}}^1$

素因数の和:386

約数の個数: 144

約数和(自身を含む): 68897920

約数和(自身を除く): 47921692

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 13, 14, 18, 19, 21, 26, 28, 36, 38, 39, 42, 52, 57, 63, 76, 78, 84, 91, 114, 117, 126, 133, 156, 171, 182, 228, 234, 247, 252, 266, 273, 337, 342, 364, 399, 468, 494, 532, 546, 674, 684, 741, 798, 819, 988, 1011, 1092, 1197, 1348, 1482, 1596, 1638, 1729, 2022, 2223, 2359, 2394, 2964, 3033, 3276, 3458, 4044, 4381, 4446, 4718, 4788, 5187, 6066, 6403, 6916, 7077, 8762, 8892, 9436, 10374, 12132, 12806, 13143, 14154, 15561, 17524, 19209, 20748, 21231, 25612, 26286, 28308, 30667, 31122, 38418, 39429, 42462, 44821, 52572, 57627, 61334, 62244, 76836, 78858, 83239, 84924, 89642, 92001, 115254, 122668, 134463, 157716, 166478, 179284, 184002, 230508, 249717, 268926, 276003, 332956, 368004, 403389, 499434, 537852, 552006, 582673, 749151, 806778, 998868, 1104012, 1165346, 1498302, 1613556, 1748019, 2330692, 2996604, 3496038, 5244057, 6992076, 10488114, 20976228]

約数ペア:

[(1, 20976228), (2, 10488114), (3, 6992076), (4, 5244057), (6, 3496038), (7, 2996604), (9, 2330692), (12, 1748019), (13, 1613556), (14, 1498302), (18, 1165346), (19, 1104012), (21, 998868), (26, 806778), (28, 749151), (36, 582673), (38, 552006), (39, 537852), (42, 499434), (52, 403389), (57, 368004), (63, 332956), (76, 276003), (78, 268926), (84, 249717), (91, 230508), (114, 184002), (117, 179284), (126, 166478), (133, 157716), (156, 134463), (171, 122668), (182, 115254), (228, 92001), (234, 89642), (247, 84924), (252, 83239), (266, 78858), (273, 76836), (337, 62244), (342, 61334), (364, 57627), (399, 52572), (468, 44821), (494, 42462), (532, 39429), (546, 38418), (674, 31122), (684, 30667), (741, 28308), (798, 26286), (819, 25612), (988, 21231), (1011, 20748), (1092, 19209), (1197, 17524), (1348, 15561), (1482, 14154), (1596, 13143), (1638, 12806), (1729, 12132), (2022, 10374), (2223, 9436), (2359, 8892), (2394, 8762), (2964, 7077), (3033, 6916), (3276, 6403), (3458, 6066), (4044, 5187), (4381, 4788), (4446, 4718)]