21501616

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{70729}}^1$

素因数の和:70756

約数の個数: 20

約数和(自身を含む): 43852600

約数和(自身を除く): 22350984

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 70729, 141458, 282916, 565832, 1131664, 1343851, 2687702, 5375404, 10750808, 21501616]

約数ペア:

[(1, 21501616), (2, 10750808), (4, 5375404), (8, 2687702), (16, 1343851), (19, 1131664), (38, 565832), (76, 282916), (152, 141458), (304, 70729)]