18815005

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{20123}}^1$

素因数の和:20156

約数の個数: 16

約数和(自身を含む): 26080704

約数和(自身を除く): 7265699

約数列:

[1, 5, 11, 17, 55, 85, 187, 935, 20123, 100615, 221353, 342091, 1106765, 1710455, 3763001, 18815005]

約数ペア:

[(1, 18815005), (5, 3763001), (11, 1710455), (17, 1106765), (55, 342091), (85, 221353), (187, 100615), (935, 20123)]