21291239654

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{139}}^2\times {\mathrm{32411}}^1$

素因数の和:32708

約数の個数: 24

約数和(自身を含む): 34061576328

約数和(自身を除く): 12770336674

約数列:

[1, 2, 17, 34, 139, 278, 2363, 4726, 19321, 32411, 38642, 64822, 328457, 550987, 656914, 1101974, 4505129, 9010258, 76587193, 153174386, 626212931, 1252425862, 10645619827, 21291239654]

約数ペア:

[(1, 21291239654), (2, 10645619827), (17, 1252425862), (34, 626212931), (139, 153174386), (278, 76587193), (2363, 9010258), (4726, 4505129), (19321, 1101974), (32411, 656914), (38642, 550987), (64822, 328457)]