21446560

素因数分解:

$2^5\times 5^1\times {\mathrm{311}}^1\times {\mathrm{431}}^1$

素因数の和:757

約数の個数: 48

約数和(自身を含む): 50948352

約数和(自身を除く): 29501792

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 311, 431, 622, 862, 1244, 1555, 1724, 2155, 2488, 3110, 3448, 4310, 4976, 6220, 6896, 8620, 9952, 12440, 13792, 17240, 24880, 34480, 49760, 68960, 134041, 268082, 536164, 670205, 1072328, 1340410, 2144656, 2680820, 4289312, 5361640, 10723280, 21446560]

約数ペア:

[(1, 21446560), (2, 10723280), (4, 5361640), (5, 4289312), (8, 2680820), (10, 2144656), (16, 1340410), (20, 1072328), (32, 670205), (40, 536164), (80, 268082), (160, 134041), (311, 68960), (431, 49760), (622, 34480), (862, 24880), (1244, 17240), (1555, 13792), (1724, 12440), (2155, 9952), (2488, 8620), (3110, 6896), (3448, 6220), (4310, 4976)]