21438392

素因数分解:

$2^3\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{67}}^1$

素因数の和:180

約数の個数: 64

約数和(自身を含む): 44651520

約数和(自身を除く): 23213128

約数列:

[1, 2, 4, 8, 23, 37, 46, 47, 67, 74, 92, 94, 134, 148, 184, 188, 268, 296, 376, 536, 851, 1081, 1541, 1702, 1739, 2162, 2479, 3082, 3149, 3404, 3478, 4324, 4958, 6164, 6298, 6808, 6956, 8648, 9916, 12328, 12596, 13912, 19832, 25192, 39997, 57017, 72427, 79994, 114034, 116513, 144854, 159988, 228068, 233026, 289708, 319976, 456136, 466052, 579416, 932104, 2679799, 5359598, 10719196, 21438392]

約数ペア:

[(1, 21438392), (2, 10719196), (4, 5359598), (8, 2679799), (23, 932104), (37, 579416), (46, 466052), (47, 456136), (67, 319976), (74, 289708), (92, 233026), (94, 228068), (134, 159988), (148, 144854), (184, 116513), (188, 114034), (268, 79994), (296, 72427), (376, 57017), (536, 39997), (851, 25192), (1081, 19832), (1541, 13912), (1702, 12596), (1739, 12328), (2162, 9916), (2479, 8648), (3082, 6956), (3149, 6808), (3404, 6298), (3478, 6164), (4324, 4958)]