18685407

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{563}}^1$

素因数の和:639

約数の個数: 32

約数和(自身を含む): 28804608

約数和(自身を除く): 10119201

約数列:

[1, 3, 13, 23, 37, 39, 69, 111, 299, 481, 563, 851, 897, 1443, 1689, 2553, 7319, 11063, 12949, 20831, 21957, 33189, 38847, 62493, 168337, 270803, 479113, 505011, 812409, 1437339, 6228469, 18685407]

約数ペア:

[(1, 18685407), (3, 6228469), (13, 1437339), (23, 812409), (37, 505011), (39, 479113), (69, 270803), (111, 168337), (299, 62493), (481, 38847), (563, 33189), (851, 21957), (897, 20831), (1443, 12949), (1689, 11063), (2553, 7319)]