20784950

素因数分解:

$2^1\times 5^2\times {\mathrm{41}}^1\times {\mathrm{10139}}^1$

素因数の和:10192

約数の個数: 24

約数和(自身を含む): 39606840

約数和(自身を除く): 18821890

約数列:

[1, 2, 5, 10, 25, 41, 50, 82, 205, 410, 1025, 2050, 10139, 20278, 50695, 101390, 253475, 415699, 506950, 831398, 2078495, 4156990, 10392475, 20784950]

約数ペア:

[(1, 20784950), (2, 10392475), (5, 4156990), (10, 2078495), (25, 831398), (41, 506950), (50, 415699), (82, 253475), (205, 101390), (410, 50695), (1025, 20278), (2050, 10139)]