21639040

素因数分解:

$2^7\times 5^1\times {\mathrm{33811}}^1$

素因数の和:33830

約数の個数: 32

約数和(自身を含む): 51732360

約数和(自身を除く): 30093320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 33811, 67622, 135244, 169055, 270488, 338110, 540976, 676220, 1081952, 1352440, 2163904, 2704880, 4327808, 5409760, 10819520, 21639040]

約数ペア:

[(1, 21639040), (2, 10819520), (4, 5409760), (5, 4327808), (8, 2704880), (10, 2163904), (16, 1352440), (20, 1081952), (32, 676220), (40, 540976), (64, 338110), (80, 270488), (128, 169055), (160, 135244), (320, 67622), (640, 33811)]