21091313900

素因数分解:

$2^2\times 5^2\times {\mathrm{210913139}}^1$

素因数の和:210913153

約数の個数: 18

約数和(自身を含む): 45768151380

約数和(自身を除く): 24676837480

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 210913139, 421826278, 843652556, 1054565695, 2109131390, 4218262780, 5272828475, 10545656950, 21091313900]

約数ペア:

[(1, 21091313900), (2, 10545656950), (4, 5272828475), (5, 4218262780), (10, 2109131390), (20, 1054565695), (25, 843652556), (50, 421826278), (100, 210913139)]