638998164

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{157}}^1\times {\mathrm{521}}^1$

素因数の和:726

約数の個数: 144

約数和(自身を含む): 1921360896

約数和(自身を除く): 1282362732

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 31, 36, 42, 62, 63, 84, 93, 124, 126, 157, 186, 217, 252, 279, 314, 372, 434, 471, 521, 558, 628, 651, 868, 942, 1042, 1099, 1116, 1302, 1413, 1563, 1884, 1953, 2084, 2198, 2604, 2826, 3126, 3297, 3647, 3906, 4396, 4689, 4867, 5652, 6252, 6594, 7294, 7812, 9378, 9734, 9891, 10941, 13188, 14588, 14601, 16151, 18756, 19468, 19782, 21882, 29202, 32302, 32823, 34069, 39564, 43764, 43803, 48453, 58404, 64604, 65646, 68138, 81797, 87606, 96906, 102207, 113057, 131292, 136276, 145359, 163594, 175212, 193812, 204414, 226114, 245391, 290718, 306621, 327188, 339171, 408828, 452228, 490782, 572579, 581436, 613242, 678342, 736173, 981564, 1017513, 1145158, 1226484, 1356684, 1472346, 1717737, 2035026, 2290316, 2535707, 2944692, 3435474, 4070052, 5071414, 5153211, 6870948, 7607121, 10142828, 10306422, 15214242, 17749949, 20612844, 22821363, 30428484, 35499898, 45642726, 53249847, 70999796, 91285452, 106499694, 159749541, 212999388, 319499082, 638998164]

約数ペア:

[(1, 638998164), (2, 319499082), (3, 212999388), (4, 159749541), (6, 106499694), (7, 91285452), (9, 70999796), (12, 53249847), (14, 45642726), (18, 35499898), (21, 30428484), (28, 22821363), (31, 20612844), (36, 17749949), (42, 15214242), (62, 10306422), (63, 10142828), (84, 7607121), (93, 6870948), (124, 5153211), (126, 5071414), (157, 4070052), (186, 3435474), (217, 2944692), (252, 2535707), (279, 2290316), (314, 2035026), (372, 1717737), (434, 1472346), (471, 1356684), (521, 1226484), (558, 1145158), (628, 1017513), (651, 981564), (868, 736173), (942, 678342), (1042, 613242), (1099, 581436), (1116, 572579), (1302, 490782), (1413, 452228), (1563, 408828), (1884, 339171), (1953, 327188), (2084, 306621), (2198, 290718), (2604, 245391), (2826, 226114), (3126, 204414), (3297, 193812), (3647, 175212), (3906, 163594), (4396, 145359), (4689, 136276), (4867, 131292), (5652, 113057), (6252, 102207), (6594, 96906), (7294, 87606), (7812, 81797), (9378, 68138), (9734, 65646), (9891, 64604), (10941, 58404), (13188, 48453), (14588, 43803), (14601, 43764), (16151, 39564), (18756, 34069), (19468, 32823), (19782, 32302), (21882, 29202)]