20872700

素因数分解:

$2^2\times 5^2\times {\mathrm{47}}^1\times {\mathrm{4441}}^1$

素因数の和:4502

約数の個数: 36

約数和(自身を含む): 46267872

約数和(自身を除く): 25395172

約数列:

[1, 2, 4, 5, 10, 20, 25, 47, 50, 94, 100, 188, 235, 470, 940, 1175, 2350, 4441, 4700, 8882, 17764, 22205, 44410, 88820, 111025, 208727, 222050, 417454, 444100, 834908, 1043635, 2087270, 4174540, 5218175, 10436350, 20872700]

約数ペア:

[(1, 20872700), (2, 10436350), (4, 5218175), (5, 4174540), (10, 2087270), (20, 1043635), (25, 834908), (47, 444100), (50, 417454), (94, 222050), (100, 208727), (188, 111025), (235, 88820), (470, 44410), (940, 22205), (1175, 17764), (2350, 8882), (4441, 4700)]