19940256

素因数分解:

$2^5\times 3^4\times 7^2\times {\mathrm{157}}^1$

素因数の和:193

約数の個数: 180

約数和(自身を含む): 68652738

約数和(自身を除く): 48712482

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 24, 27, 28, 32, 36, 42, 48, 49, 54, 56, 63, 72, 81, 84, 96, 98, 108, 112, 126, 144, 147, 157, 162, 168, 189, 196, 216, 224, 252, 288, 294, 314, 324, 336, 378, 392, 432, 441, 471, 504, 567, 588, 628, 648, 672, 756, 784, 864, 882, 942, 1008, 1099, 1134, 1176, 1256, 1296, 1323, 1413, 1512, 1568, 1764, 1884, 2016, 2198, 2268, 2352, 2512, 2592, 2646, 2826, 3024, 3297, 3528, 3768, 3969, 4239, 4396, 4536, 4704, 5024, 5292, 5652, 6048, 6594, 7056, 7536, 7693, 7938, 8478, 8792, 9072, 9891, 10584, 11304, 12717, 13188, 14112, 15072, 15386, 15876, 16956, 17584, 18144, 19782, 21168, 22608, 23079, 25434, 26376, 29673, 30772, 31752, 33912, 35168, 39564, 42336, 45216, 46158, 50868, 52752, 59346, 61544, 63504, 67824, 69237, 79128, 89019, 92316, 101736, 105504, 118692, 123088, 127008, 135648, 138474, 158256, 178038, 184632, 203472, 207711, 237384, 246176, 276948, 316512, 356076, 369264, 406944, 415422, 474768, 553896, 623133, 712152, 738528, 830844, 949536, 1107792, 1246266, 1424304, 1661688, 2215584, 2492532, 2848608, 3323376, 4985064, 6646752, 9970128, 19940256]

約数ペア:

[(1, 19940256), (2, 9970128), (3, 6646752), (4, 4985064), (6, 3323376), (7, 2848608), (8, 2492532), (9, 2215584), (12, 1661688), (14, 1424304), (16, 1246266), (18, 1107792), (21, 949536), (24, 830844), (27, 738528), (28, 712152), (32, 623133), (36, 553896), (42, 474768), (48, 415422), (49, 406944), (54, 369264), (56, 356076), (63, 316512), (72, 276948), (81, 246176), (84, 237384), (96, 207711), (98, 203472), (108, 184632), (112, 178038), (126, 158256), (144, 138474), (147, 135648), (157, 127008), (162, 123088), (168, 118692), (189, 105504), (196, 101736), (216, 92316), (224, 89019), (252, 79128), (288, 69237), (294, 67824), (314, 63504), (324, 61544), (336, 59346), (378, 52752), (392, 50868), (432, 46158), (441, 45216), (471, 42336), (504, 39564), (567, 35168), (588, 33912), (628, 31752), (648, 30772), (672, 29673), (756, 26376), (784, 25434), (864, 23079), (882, 22608), (942, 21168), (1008, 19782), (1099, 18144), (1134, 17584), (1176, 16956), (1256, 15876), (1296, 15386), (1323, 15072), (1413, 14112), (1512, 13188), (1568, 12717), (1764, 11304), (1884, 10584), (2016, 9891), (2198, 9072), (2268, 8792), (2352, 8478), (2512, 7938), (2592, 7693), (2646, 7536), (2826, 7056), (3024, 6594), (3297, 6048), (3528, 5652), (3768, 5292), (3969, 5024), (4239, 4704), (4396, 4536)]