20181037545

素因数分解:

$3^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{149}}^1\times {\mathrm{181}}^1\times {\mathrm{241}}^1$

素因数の和:608

約数の個数: 128

約数和(自身を含む): 38054016000

約数和(自身を除く): 17872978455

約数列:

[1, 3, 5, 9, 15, 23, 27, 45, 69, 115, 135, 149, 181, 207, 241, 345, 447, 543, 621, 723, 745, 905, 1035, 1205, 1341, 1629, 2169, 2235, 2715, 3105, 3427, 3615, 4023, 4163, 4887, 5543, 6507, 6705, 8145, 10281, 10845, 12489, 16629, 17135, 20115, 20815, 24435, 26969, 27715, 30843, 32535, 35909, 37467, 43621, 49887, 51405, 62445, 80907, 83145, 92529, 107727, 112401, 130863, 134845, 149661, 154215, 179545, 187335, 218105, 242721, 249435, 323181, 392589, 404535, 462645, 538635, 562005, 620287, 654315, 728163, 748305, 825907, 969543, 1003283, 1177767, 1213605, 1615905, 1860861, 1962945, 2477721, 3009849, 3101435, 3640815, 4129535, 4847715, 5016415, 5582583, 5888835, 6499529, 7433163, 9029547, 9304305, 12388605, 15049245, 16747749, 19498587, 22299489, 27088641, 27912915, 32497645, 37165815, 45147735, 58495761, 83738745, 97492935, 111497445, 135443205, 149489167, 175487283, 292478805, 448467501, 747445835, 877436415, 1345402503, 2242337505, 4036207509, 6727012515, 20181037545]

約数ペア:

[(1, 20181037545), (3, 6727012515), (5, 4036207509), (9, 2242337505), (15, 1345402503), (23, 877436415), (27, 747445835), (45, 448467501), (69, 292478805), (115, 175487283), (135, 149489167), (149, 135443205), (181, 111497445), (207, 97492935), (241, 83738745), (345, 58495761), (447, 45147735), (543, 37165815), (621, 32497645), (723, 27912915), (745, 27088641), (905, 22299489), (1035, 19498587), (1205, 16747749), (1341, 15049245), (1629, 12388605), (2169, 9304305), (2235, 9029547), (2715, 7433163), (3105, 6499529), (3427, 5888835), (3615, 5582583), (4023, 5016415), (4163, 4847715), (4887, 4129535), (5543, 3640815), (6507, 3101435), (6705, 3009849), (8145, 2477721), (10281, 1962945), (10845, 1860861), (12489, 1615905), (16629, 1213605), (17135, 1177767), (20115, 1003283), (20815, 969543), (24435, 825907), (26969, 748305), (27715, 728163), (30843, 654315), (32535, 620287), (35909, 562005), (37467, 538635), (43621, 462645), (49887, 404535), (51405, 392589), (62445, 323181), (80907, 249435), (83145, 242721), (92529, 218105), (107727, 187335), (112401, 179545), (130863, 154215), (134845, 149661)]