18681988

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{277}}^1\times {\mathrm{1297}}^1$

素因数の和:1591

約数の個数: 24

約数和(自身を含む): 35362712

約数和(自身を除く): 16680724

約数列:

[1, 2, 4, 13, 26, 52, 277, 554, 1108, 1297, 2594, 3601, 5188, 7202, 14404, 16861, 33722, 67444, 359269, 718538, 1437076, 4670497, 9340994, 18681988]

約数ペア:

[(1, 18681988), (2, 9340994), (4, 4670497), (13, 1437076), (26, 718538), (52, 359269), (277, 67444), (554, 33722), (1108, 16861), (1297, 14404), (2594, 7202), (3601, 5188)]