80645020

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{29009}}^1$

素因数の和:29157

約数の個数: 24

約数和(自身を含む): 170578800

約数和(自身を除く): 89933780

約数列:

[1, 2, 4, 5, 10, 20, 139, 278, 556, 695, 1390, 2780, 29009, 58018, 116036, 145045, 290090, 580180, 4032251, 8064502, 16129004, 20161255, 40322510, 80645020]

約数ペア:

[(1, 80645020), (2, 40322510), (4, 20161255), (5, 16129004), (10, 8064502), (20, 4032251), (139, 580180), (278, 290090), (556, 145045), (695, 116036), (1390, 58018), (2780, 29009)]