21387744

素因数分解:

$2^5\times 3^2\times 7^1\times {\mathrm{103}}^2$

素因数の和:229

約数の個数: 108

約数和(自身を含む): 70191576

約数和(自身を除く): 48803832

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 24, 28, 32, 36, 42, 48, 56, 63, 72, 84, 96, 103, 112, 126, 144, 168, 206, 224, 252, 288, 309, 336, 412, 504, 618, 672, 721, 824, 927, 1008, 1236, 1442, 1648, 1854, 2016, 2163, 2472, 2884, 3296, 3708, 4326, 4944, 5768, 6489, 7416, 8652, 9888, 10609, 11536, 12978, 14832, 17304, 21218, 23072, 25956, 29664, 31827, 34608, 42436, 51912, 63654, 69216, 74263, 84872, 95481, 103824, 127308, 148526, 169744, 190962, 207648, 222789, 254616, 297052, 339488, 381924, 445578, 509232, 594104, 668367, 763848, 891156, 1018464, 1188208, 1336734, 1527696, 1782312, 2376416, 2673468, 3055392, 3564624, 5346936, 7129248, 10693872, 21387744]

約数ペア:

[(1, 21387744), (2, 10693872), (3, 7129248), (4, 5346936), (6, 3564624), (7, 3055392), (8, 2673468), (9, 2376416), (12, 1782312), (14, 1527696), (16, 1336734), (18, 1188208), (21, 1018464), (24, 891156), (28, 763848), (32, 668367), (36, 594104), (42, 509232), (48, 445578), (56, 381924), (63, 339488), (72, 297052), (84, 254616), (96, 222789), (103, 207648), (112, 190962), (126, 169744), (144, 148526), (168, 127308), (206, 103824), (224, 95481), (252, 84872), (288, 74263), (309, 69216), (336, 63654), (412, 51912), (504, 42436), (618, 34608), (672, 31827), (721, 29664), (824, 25956), (927, 23072), (1008, 21218), (1236, 17304), (1442, 14832), (1648, 12978), (1854, 11536), (2016, 10609), (2163, 9888), (2472, 8652), (2884, 7416), (3296, 6489), (3708, 5768), (4326, 4944)]