64698140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{248839}}^1$

素因数の和:248861

約数の個数: 24

約数和(自身を含む): 146317920

約数和(自身を除く): 81619780

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 248839, 497678, 995356, 1244195, 2488390, 3234907, 4976780, 6469814, 12939628, 16174535, 32349070, 64698140]

約数ペア:

[(1, 64698140), (2, 32349070), (4, 16174535), (5, 12939628), (10, 6469814), (13, 4976780), (20, 3234907), (26, 2488390), (52, 1244195), (65, 995356), (130, 497678), (260, 248839)]