18821816

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{2549}}^1$

素因数の和:2639

約数の個数: 32

約数和(自身を含む): 38556000

約数和(自身を除く): 19734184

約数列:

[1, 2, 4, 8, 13, 26, 52, 71, 104, 142, 284, 568, 923, 1846, 2549, 3692, 5098, 7384, 10196, 20392, 33137, 66274, 132548, 180979, 265096, 361958, 723916, 1447832, 2352727, 4705454, 9410908, 18821816]

約数ペア:

[(1, 18821816), (2, 9410908), (4, 4705454), (8, 2352727), (13, 1447832), (26, 723916), (52, 361958), (71, 265096), (104, 180979), (142, 132548), (284, 66274), (568, 33137), (923, 20392), (1846, 10196), (2549, 7384), (3692, 5098)]