989956

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{149}}^1\times {\mathrm{151}}^1$

素因数の和:315

約数の個数: 24

約数和(自身を含む): 1915200

約数和(自身を除く): 925244

約数列:

[1, 2, 4, 11, 22, 44, 149, 151, 298, 302, 596, 604, 1639, 1661, 3278, 3322, 6556, 6644, 22499, 44998, 89996, 247489, 494978, 989956]

約数ペア:

[(1, 989956), (2, 494978), (4, 247489), (11, 89996), (22, 44998), (44, 22499), (149, 6644), (151, 6556), (298, 3322), (302, 3278), (596, 1661), (604, 1639)]