21265328

素因数分解:

$2^4\times 7^1\times {\mathrm{181}}^1\times {\mathrm{1049}}^1$

素因数の和:1245

約数の個数: 40

約数和(自身を含む): 47392800

約数和(自身を除く): 26127472

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 181, 362, 724, 1049, 1267, 1448, 2098, 2534, 2896, 4196, 5068, 7343, 8392, 10136, 14686, 16784, 20272, 29372, 58744, 117488, 189869, 379738, 759476, 1329083, 1518952, 2658166, 3037904, 5316332, 10632664, 21265328]

約数ペア:

[(1, 21265328), (2, 10632664), (4, 5316332), (7, 3037904), (8, 2658166), (14, 1518952), (16, 1329083), (28, 759476), (56, 379738), (112, 189869), (181, 117488), (362, 58744), (724, 29372), (1049, 20272), (1267, 16784), (1448, 14686), (2098, 10136), (2534, 8392), (2896, 7343), (4196, 5068)]