81854860

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{99823}}^1$

素因数の和:99873

約数の個数: 24

約数和(自身を含む): 176089536

約数和(自身を除く): 94234676

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 99823, 199646, 399292, 499115, 998230, 1996460, 4092743, 8185486, 16370972, 20463715, 40927430, 81854860]

約数ペア:

[(1, 81854860), (2, 40927430), (4, 20463715), (5, 16370972), (10, 8185486), (20, 4092743), (41, 1996460), (82, 998230), (164, 499115), (205, 399292), (410, 199646), (820, 99823)]