168642020

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{205661}}^1$

素因数の和:205711

約数の個数: 24

約数和(自身を含む): 362787768

約数和(自身を除く): 194145748

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 205661, 411322, 822644, 1028305, 2056610, 4113220, 8432101, 16864202, 33728404, 42160505, 84321010, 168642020]

約数ペア:

[(1, 168642020), (2, 84321010), (4, 42160505), (5, 33728404), (10, 16864202), (20, 8432101), (41, 4113220), (82, 2056610), (164, 1028305), (205, 822644), (410, 411322), (820, 205661)]