81278020

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{239053}}^1$

素因数の和:239079

約数の個数: 24

約数和(自身を含む): 180724824

約数和(自身を除く): 99446804

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 239053, 478106, 956212, 1195265, 2390530, 4063901, 4781060, 8127802, 16255604, 20319505, 40639010, 81278020]

約数ペア:

[(1, 81278020), (2, 40639010), (4, 20319505), (5, 16255604), (10, 8127802), (17, 4781060), (20, 4063901), (34, 2390530), (68, 1195265), (85, 956212), (170, 478106), (340, 239053)]