661557078

素因数分解:

$2^1\times 3^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{2207}}^1$

素因数の和:2299

約数の個数: 128

約数和(自身を含む): 1839882240

約数和(自身を除く): 1178325162

約数列:

[1, 2, 3, 6, 7, 9, 13, 14, 18, 21, 26, 27, 39, 42, 54, 61, 63, 78, 91, 117, 122, 126, 182, 183, 189, 234, 273, 351, 366, 378, 427, 546, 549, 702, 793, 819, 854, 1098, 1281, 1586, 1638, 1647, 2207, 2379, 2457, 2562, 3294, 3843, 4414, 4758, 4914, 5551, 6621, 7137, 7686, 11102, 11529, 13242, 14274, 15449, 16653, 19863, 21411, 23058, 28691, 30898, 33306, 39726, 42822, 46347, 49959, 57382, 59589, 86073, 92694, 99918, 119178, 134627, 139041, 149877, 172146, 200837, 258219, 269254, 278082, 299754, 401674, 403881, 417123, 516438, 602511, 774657, 807762, 834246, 942389, 1205022, 1211643, 1549314, 1750151, 1807533, 1884778, 2423286, 2827167, 3500302, 3615066, 3634929, 5250453, 5422599, 5654334, 7269858, 8481501, 10500906, 10845198, 12251057, 15751359, 16963002, 24502114, 25444503, 31502718, 36753171, 47254077, 50889006, 73506342, 94508154, 110259513, 220519026, 330778539, 661557078]

約数ペア:

[(1, 661557078), (2, 330778539), (3, 220519026), (6, 110259513), (7, 94508154), (9, 73506342), (13, 50889006), (14, 47254077), (18, 36753171), (21, 31502718), (26, 25444503), (27, 24502114), (39, 16963002), (42, 15751359), (54, 12251057), (61, 10845198), (63, 10500906), (78, 8481501), (91, 7269858), (117, 5654334), (122, 5422599), (126, 5250453), (182, 3634929), (183, 3615066), (189, 3500302), (234, 2827167), (273, 2423286), (351, 1884778), (366, 1807533), (378, 1750151), (427, 1549314), (546, 1211643), (549, 1205022), (702, 942389), (793, 834246), (819, 807762), (854, 774657), (1098, 602511), (1281, 516438), (1586, 417123), (1638, 403881), (1647, 401674), (2207, 299754), (2379, 278082), (2457, 269254), (2562, 258219), (3294, 200837), (3843, 172146), (4414, 149877), (4758, 139041), (4914, 134627), (5551, 119178), (6621, 99918), (7137, 92694), (7686, 86073), (11102, 59589), (11529, 57382), (13242, 49959), (14274, 46347), (15449, 42822), (16653, 39726), (19863, 33306), (21411, 30898), (23058, 28691)]