20728994

素因数分解:

$2^1\times {\mathrm{11}}^3\times {\mathrm{13}}^1\times {\mathrm{599}}^1$

素因数の和:647

約数の個数: 32

約数和(自身を含む): 36892800

約数和(自身を除く): 16163806

約数列:

[1, 2, 11, 13, 22, 26, 121, 143, 242, 286, 599, 1198, 1331, 1573, 2662, 3146, 6589, 7787, 13178, 15574, 17303, 34606, 72479, 85657, 144958, 171314, 797269, 942227, 1594538, 1884454, 10364497, 20728994]

約数ペア:

[(1, 20728994), (2, 10364497), (11, 1884454), (13, 1594538), (22, 942227), (26, 797269), (121, 171314), (143, 144958), (242, 85657), (286, 72479), (599, 34606), (1198, 17303), (1331, 15574), (1573, 13178), (2662, 7787), (3146, 6589)]