128388085

素因数分解:

$5^1\times 7^2\times {\mathrm{149}}^1\times {\mathrm{3517}}^1$

素因数の和:3685

約数の個数: 24

約数和(自身を含む): 180473400

約数和(自身を除く): 52085315

約数列:

[1, 5, 7, 35, 49, 149, 245, 745, 1043, 3517, 5215, 7301, 17585, 24619, 36505, 123095, 172333, 524033, 861665, 2620165, 3668231, 18341155, 25677617, 128388085]

約数ペア:

[(1, 128388085), (5, 25677617), (7, 18341155), (35, 3668231), (49, 2620165), (149, 861665), (245, 524033), (745, 172333), (1043, 123095), (3517, 36505), (5215, 24619), (7301, 17585)]