20491030

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{199}}^1\times {\mathrm{1471}}^1$

素因数の和:1684

約数の個数: 32

約数和(自身を含む): 42393600

約数和(自身を除く): 21902570

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 199, 398, 995, 1393, 1471, 1990, 2786, 2942, 6965, 7355, 10297, 13930, 14710, 20594, 51485, 102970, 292729, 585458, 1463645, 2049103, 2927290, 4098206, 10245515, 20491030]

約数ペア:

[(1, 20491030), (2, 10245515), (5, 4098206), (7, 2927290), (10, 2049103), (14, 1463645), (35, 585458), (70, 292729), (199, 102970), (398, 51485), (995, 20594), (1393, 14710), (1471, 13930), (1990, 10297), (2786, 7355), (2942, 6965)]