256579810

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{991}}^1\times {\mathrm{1523}}^1$

素因数の和:2538

約数の個数: 32

約数和(自身を含む): 489825792

約数和(自身を除く): 233245982

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 991, 1523, 1982, 3046, 4955, 7615, 9910, 15230, 16847, 25891, 33694, 51782, 84235, 129455, 168470, 258910, 1509293, 3018586, 7546465, 15092930, 25657981, 51315962, 128289905, 256579810]

約数ペア:

[(1, 256579810), (2, 128289905), (5, 51315962), (10, 25657981), (17, 15092930), (34, 7546465), (85, 3018586), (170, 1509293), (991, 258910), (1523, 168470), (1982, 129455), (3046, 84235), (4955, 51782), (7615, 33694), (9910, 25891), (15230, 16847)]