19779984

素因数分解:

$2^4\times 3^3\times 7^1\times {\mathrm{31}}^1\times {\mathrm{211}}^1$

素因数の和:266

約数の個数: 160

約数和(自身を含む): 67297280

約数和(自身を除く): 47517296

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 24, 27, 28, 31, 36, 42, 48, 54, 56, 62, 63, 72, 84, 93, 108, 112, 124, 126, 144, 168, 186, 189, 211, 216, 217, 248, 252, 279, 336, 372, 378, 422, 432, 434, 496, 504, 558, 633, 651, 744, 756, 837, 844, 868, 1008, 1116, 1266, 1302, 1477, 1488, 1512, 1674, 1688, 1736, 1899, 1953, 2232, 2532, 2604, 2954, 3024, 3348, 3376, 3472, 3798, 3906, 4431, 4464, 5064, 5208, 5697, 5859, 5908, 6541, 6696, 7596, 7812, 8862, 10128, 10416, 11394, 11718, 11816, 13082, 13293, 13392, 15192, 15624, 17724, 19623, 22788, 23436, 23632, 26164, 26586, 30384, 31248, 35448, 39246, 39879, 45576, 45787, 46872, 52328, 53172, 58869, 70896, 78492, 79758, 91152, 91574, 93744, 104656, 106344, 117738, 137361, 156984, 159516, 176607, 183148, 212688, 235476, 274722, 313968, 319032, 353214, 366296, 412083, 470952, 549444, 638064, 706428, 732592, 824166, 941904, 1098888, 1236249, 1412856, 1648332, 2197776, 2472498, 2825712, 3296664, 4944996, 6593328, 9889992, 19779984]

約数ペア:

[(1, 19779984), (2, 9889992), (3, 6593328), (4, 4944996), (6, 3296664), (7, 2825712), (8, 2472498), (9, 2197776), (12, 1648332), (14, 1412856), (16, 1236249), (18, 1098888), (21, 941904), (24, 824166), (27, 732592), (28, 706428), (31, 638064), (36, 549444), (42, 470952), (48, 412083), (54, 366296), (56, 353214), (62, 319032), (63, 313968), (72, 274722), (84, 235476), (93, 212688), (108, 183148), (112, 176607), (124, 159516), (126, 156984), (144, 137361), (168, 117738), (186, 106344), (189, 104656), (211, 93744), (216, 91574), (217, 91152), (248, 79758), (252, 78492), (279, 70896), (336, 58869), (372, 53172), (378, 52328), (422, 46872), (432, 45787), (434, 45576), (496, 39879), (504, 39246), (558, 35448), (633, 31248), (651, 30384), (744, 26586), (756, 26164), (837, 23632), (844, 23436), (868, 22788), (1008, 19623), (1116, 17724), (1266, 15624), (1302, 15192), (1477, 13392), (1488, 13293), (1512, 13082), (1674, 11816), (1688, 11718), (1736, 11394), (1899, 10416), (1953, 10128), (2232, 8862), (2532, 7812), (2604, 7596), (2954, 6696), (3024, 6541), (3348, 5908), (3376, 5859), (3472, 5697), (3798, 5208), (3906, 5064), (4431, 4464)]