128216095

素因数分解:

$5^1\times 7^2\times {\mathrm{419}}^1\times {\mathrm{1249}}^1$

素因数の和:1687

約数の個数: 24

約数和(自身を含む): 179550000

約数和(自身を除く): 51333905

約数列:

[1, 5, 7, 35, 49, 245, 419, 1249, 2095, 2933, 6245, 8743, 14665, 20531, 43715, 61201, 102655, 306005, 523331, 2616655, 3663317, 18316585, 25643219, 128216095]

約数ペア:

[(1, 128216095), (5, 25643219), (7, 18316585), (35, 3663317), (49, 2616655), (245, 523331), (419, 306005), (1249, 102655), (2095, 61201), (2933, 43715), (6245, 20531), (8743, 14665)]