18510908

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{139}}^1\times {\mathrm{197}}^1$

素因数の和:366

約数の個数: 36

約数和(自身を含む): 35509320

約数和(自身を除く): 16998412

約数列:

[1, 2, 4, 13, 26, 52, 139, 169, 197, 278, 338, 394, 556, 676, 788, 1807, 2561, 3614, 5122, 7228, 10244, 23491, 27383, 33293, 46982, 54766, 66586, 93964, 109532, 133172, 355979, 711958, 1423916, 4627727, 9255454, 18510908]

約数ペア:

[(1, 18510908), (2, 9255454), (4, 4627727), (13, 1423916), (26, 711958), (52, 355979), (139, 133172), (169, 109532), (197, 93964), (278, 66586), (338, 54766), (394, 46982), (556, 33293), (676, 27383), (788, 23491), (1807, 10244), (2561, 7228), (3614, 5122)]