21085940

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^2\times {\mathrm{1993}}^1$

素因数の和:2048

約数の個数: 36

約数和(自身を含む): 46312644

約数和(自身を除く): 25226704

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 230, 460, 529, 1058, 1993, 2116, 2645, 3986, 5290, 7972, 9965, 10580, 19930, 39860, 45839, 91678, 183356, 229195, 458390, 916780, 1054297, 2108594, 4217188, 5271485, 10542970, 21085940]

約数ペア:

[(1, 21085940), (2, 10542970), (4, 5271485), (5, 4217188), (10, 2108594), (20, 1054297), (23, 916780), (46, 458390), (92, 229195), (115, 183356), (230, 91678), (460, 45839), (529, 39860), (1058, 19930), (1993, 10580), (2116, 9965), (2645, 7972), (3986, 5290)]