20981776

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{69019}}^1$

素因数の和:69046

約数の個数: 20

約数和(自身を含む): 42792400

約数和(自身を除く): 21810624

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 69019, 138038, 276076, 552152, 1104304, 1311361, 2622722, 5245444, 10490888, 20981776]

約数ペア:

[(1, 20981776), (2, 10490888), (4, 5245444), (8, 2622722), (16, 1311361), (19, 1104304), (38, 552152), (76, 276076), (152, 138038), (304, 69019)]