21491930

素因数分解:

$2^1\times 5^1\times {\mathrm{59}}^1\times {\mathrm{73}}^1\times {\mathrm{499}}^1$

素因数の和:638

約数の個数: 32

約数和(自身を含む): 39960000

約数和(自身を除く): 18468070

約数列:

[1, 2, 5, 10, 59, 73, 118, 146, 295, 365, 499, 590, 730, 998, 2495, 4307, 4990, 8614, 21535, 29441, 36427, 43070, 58882, 72854, 147205, 182135, 294410, 364270, 2149193, 4298386, 10745965, 21491930]

約数ペア:

[(1, 21491930), (2, 10745965), (5, 4298386), (10, 2149193), (59, 364270), (73, 294410), (118, 182135), (146, 147205), (295, 72854), (365, 58882), (499, 43070), (590, 36427), (730, 29441), (998, 21535), (2495, 8614), (4307, 4990)]