256844315

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{271}}^1\times {\mathrm{2083}}^1$

素因数の和:2379

約数の個数: 32

約数和(自身を含む): 380921856

約数和(自身を除く): 124077541

約数列:

[1, 5, 7, 13, 35, 65, 91, 271, 455, 1355, 1897, 2083, 3523, 9485, 10415, 14581, 17615, 24661, 27079, 72905, 123305, 135395, 189553, 564493, 947765, 2822465, 3951451, 7338409, 19757255, 36692045, 51368863, 256844315]

約数ペア:

[(1, 256844315), (5, 51368863), (7, 36692045), (13, 19757255), (35, 7338409), (65, 3951451), (91, 2822465), (271, 947765), (455, 564493), (1355, 189553), (1897, 135395), (2083, 123305), (3523, 72905), (9485, 27079), (10415, 24661), (14581, 17615)]