21903040

素因数分解:

$2^6\times 5^1\times {\mathrm{68447}}^1$

素因数の和:68464

約数の個数: 28

約数和(自身を含む): 52157376

約数和(自身を除く): 30254336

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 68447, 136894, 273788, 342235, 547576, 684470, 1095152, 1368940, 2190304, 2737880, 4380608, 5475760, 10951520, 21903040]

約数ペア:

[(1, 21903040), (2, 10951520), (4, 5475760), (5, 4380608), (8, 2737880), (10, 2190304), (16, 1368940), (20, 1095152), (32, 684470), (40, 547576), (64, 342235), (80, 273788), (160, 136894), (320, 68447)]