128365005

素因数分解:

$3^1\times 5^1\times {\mathrm{421}}^1\times {\mathrm{20327}}^1$

素因数の和:20756

約数の個数: 16

約数和(自身を含む): 205881984

約数和(自身を除く): 77516979

約数列:

[1, 3, 5, 15, 421, 1263, 2105, 6315, 20327, 60981, 101635, 304905, 8557667, 25673001, 42788335, 128365005]

約数ペア:

[(1, 128365005), (3, 42788335), (5, 25673001), (15, 8557667), (421, 304905), (1263, 101635), (2105, 60981), (6315, 20327)]