20724500

素因数分解:

$2^2\times 5^3\times {\mathrm{181}}^1\times {\mathrm{229}}^1$

素因数の和:429

約数の個数: 48

約数和(自身を含む): 45711120

約数和(自身を除く): 24986620

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 181, 229, 250, 362, 458, 500, 724, 905, 916, 1145, 1810, 2290, 3620, 4525, 4580, 5725, 9050, 11450, 18100, 22625, 22900, 28625, 41449, 45250, 57250, 82898, 90500, 114500, 165796, 207245, 414490, 828980, 1036225, 2072450, 4144900, 5181125, 10362250, 20724500]

約数ペア:

[(1, 20724500), (2, 10362250), (4, 5181125), (5, 4144900), (10, 2072450), (20, 1036225), (25, 828980), (50, 414490), (100, 207245), (125, 165796), (181, 114500), (229, 90500), (250, 82898), (362, 57250), (458, 45250), (500, 41449), (724, 28625), (905, 22900), (916, 22625), (1145, 18100), (1810, 11450), (2290, 9050), (3620, 5725), (4525, 4580)]