66688784

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{219371}}^1$

素因数の和:219398

約数の個数: 20

約数和(自身を含む): 136010640

約数和(自身を除く): 69321856

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 219371, 438742, 877484, 1754968, 3509936, 4168049, 8336098, 16672196, 33344392, 66688784]

約数ペア:

[(1, 66688784), (2, 33344392), (4, 16672196), (8, 8336098), (16, 4168049), (19, 3509936), (38, 1754968), (76, 877484), (152, 438742), (304, 219371)]