66865712

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{219953}}^1$

素因数の和:219980

約数の個数: 20

約数和(自身を含む): 136371480

約数和(自身を除く): 69505768

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 219953, 439906, 879812, 1759624, 3519248, 4179107, 8358214, 16716428, 33432856, 66865712]

約数ペア:

[(1, 66865712), (2, 33432856), (4, 16716428), (8, 8358214), (16, 4179107), (19, 3519248), (38, 1759624), (76, 879812), (152, 439906), (304, 219953)]