81795020

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{51769}}^1$

素因数の和:51857

約数の個数: 24

約数和(自身を含む): 173947200

約数和(自身を除く): 92152180

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 51769, 103538, 207076, 258845, 517690, 1035380, 4089751, 8179502, 16359004, 20448755, 40897510, 81795020]

約数ペア:

[(1, 81795020), (2, 40897510), (4, 20448755), (5, 16359004), (10, 8179502), (20, 4089751), (79, 1035380), (158, 517690), (316, 258845), (395, 207076), (790, 103538), (1580, 51769)]