78879988

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{20143}}^1$

素因数の和:20247

約数の個数: 24

約数和(自身を含む): 152288640

約数和(自身を除く): 73408652

約数列:

[1, 2, 4, 11, 22, 44, 89, 178, 356, 979, 1958, 3916, 20143, 40286, 80572, 221573, 443146, 886292, 1792727, 3585454, 7170908, 19719997, 39439994, 78879988]

約数ペア:

[(1, 78879988), (2, 39439994), (4, 19719997), (11, 7170908), (22, 3585454), (44, 1792727), (89, 886292), (178, 443146), (356, 221573), (979, 80572), (1958, 40286), (3916, 20143)]