81278776

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{327737}}^1$

素因数の和:327774

約数の個数: 16

約数和(自身を含む): 157314240

約数和(自身を除く): 76035464

約数列:

[1, 2, 4, 8, 31, 62, 124, 248, 327737, 655474, 1310948, 2621896, 10159847, 20319694, 40639388, 81278776]

約数ペア:

[(1, 81278776), (2, 40639388), (4, 20319694), (8, 10159847), (31, 2621896), (62, 1310948), (124, 655474), (248, 327737)]