642760443

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{289141}}^1$

素因数の和:289179

約数の個数: 24

約数和(自身を含む): 1052476880

約数和(自身を除く): 409716437

約数列:

[1, 3, 9, 13, 19, 39, 57, 117, 171, 247, 741, 2223, 289141, 867423, 2602269, 3758833, 5493679, 11276499, 16481037, 33829497, 49443111, 71417827, 214253481, 642760443]

約数ペア:

[(1, 642760443), (3, 214253481), (9, 71417827), (13, 49443111), (19, 33829497), (39, 16481037), (57, 11276499), (117, 5493679), (171, 3758833), (247, 2602269), (741, 867423), (2223, 289141)]