28790140

素因数分解:

$2^2\times 5^1\times {\mathrm{113}}^1\times {\mathrm{12739}}^1$

素因数の和:12861

約数の個数: 24

約数和(自身を含む): 60999120

約数和(自身を除く): 32208980

約数列:

[1, 2, 4, 5, 10, 20, 113, 226, 452, 565, 1130, 2260, 12739, 25478, 50956, 63695, 127390, 254780, 1439507, 2879014, 5758028, 7197535, 14395070, 28790140]

約数ペア:

[(1, 28790140), (2, 14395070), (4, 7197535), (5, 5758028), (10, 2879014), (20, 1439507), (113, 254780), (226, 127390), (452, 63695), (565, 50956), (1130, 25478), (2260, 12739)]