81475220

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{239633}}^1$

素因数の和:239659

約数の個数: 24

約数和(自身を含む): 181163304

約数和(自身を除く): 99688084

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 239633, 479266, 958532, 1198165, 2396330, 4073761, 4792660, 8147522, 16295044, 20368805, 40737610, 81475220]

約数ペア:

[(1, 81475220), (2, 40737610), (4, 20368805), (5, 16295044), (10, 8147522), (17, 4792660), (20, 4073761), (34, 2396330), (68, 1198165), (85, 958532), (170, 479266), (340, 239633)]