81701555

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{89}}^1\times {\mathrm{487}}^1$

素因数の和:623

約数の個数: 32

約数和(自身を含む): 110678400

約数和(自身を除く): 28976845

約数列:

[1, 5, 13, 29, 65, 89, 145, 377, 445, 487, 1157, 1885, 2435, 2581, 5785, 6331, 12905, 14123, 31655, 33553, 43343, 70615, 167765, 183599, 216715, 563459, 917995, 1256947, 2817295, 6284735, 16340311, 81701555]

約数ペア:

[(1, 81701555), (5, 16340311), (13, 6284735), (29, 2817295), (65, 1256947), (89, 917995), (145, 563459), (377, 216715), (445, 183599), (487, 167765), (1157, 70615), (1885, 43343), (2435, 33553), (2581, 31655), (5785, 14123), (6331, 12905)]