21165664

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{613}}^1$

素因数の和:719

約数の個数: 48

約数和(自身を含む): 45490032

約数和(自身を除く): 24324368

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 83, 104, 166, 208, 332, 416, 613, 664, 1079, 1226, 1328, 2158, 2452, 2656, 4316, 4904, 7969, 8632, 9808, 15938, 17264, 19616, 31876, 34528, 50879, 63752, 101758, 127504, 203516, 255008, 407032, 661427, 814064, 1322854, 1628128, 2645708, 5291416, 10582832, 21165664]

約数ペア:

[(1, 21165664), (2, 10582832), (4, 5291416), (8, 2645708), (13, 1628128), (16, 1322854), (26, 814064), (32, 661427), (52, 407032), (83, 255008), (104, 203516), (166, 127504), (208, 101758), (332, 63752), (416, 50879), (613, 34528), (664, 31876), (1079, 19616), (1226, 17264), (1328, 15938), (2158, 9808), (2452, 8632), (2656, 7969), (4316, 4904)]