686348

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{197}}^1$

素因数の和:281

約数の個数: 24

約数和(自身を含む): 1319472

約数和(自身を除く): 633124

約数列:

[1, 2, 4, 13, 26, 52, 67, 134, 197, 268, 394, 788, 871, 1742, 2561, 3484, 5122, 10244, 13199, 26398, 52796, 171587, 343174, 686348]

約数ペア:

[(1, 686348), (2, 343174), (4, 171587), (13, 52796), (26, 26398), (52, 13199), (67, 10244), (134, 5122), (197, 3484), (268, 2561), (394, 1742), (788, 871)]