18240235

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{971}}^1$

素因数の和:1023

約数の個数: 24

約数和(自身を含む): 25065936

約数和(自身を除く): 6825701

約数列:

[1, 5, 13, 17, 65, 85, 221, 289, 971, 1105, 1445, 3757, 4855, 12623, 16507, 18785, 63115, 82535, 214591, 280619, 1072955, 1403095, 3648047, 18240235]

約数ペア:

[(1, 18240235), (5, 3648047), (13, 1403095), (17, 1072955), (65, 280619), (85, 214591), (221, 82535), (289, 63115), (971, 18785), (1105, 16507), (1445, 12623), (3757, 4855)]