21595480

素因数分解:

$2^3\times 5^1\times {\mathrm{199}}^1\times {\mathrm{2713}}^1$

素因数の和:2923

約数の個数: 32

約数和(自身を含む): 48852000

約数和(自身を除く): 27256520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 199, 398, 796, 995, 1592, 1990, 2713, 3980, 5426, 7960, 10852, 13565, 21704, 27130, 54260, 108520, 539887, 1079774, 2159548, 2699435, 4319096, 5398870, 10797740, 21595480]

約数ペア:

[(1, 21595480), (2, 10797740), (4, 5398870), (5, 4319096), (8, 2699435), (10, 2159548), (20, 1079774), (40, 539887), (199, 108520), (398, 54260), (796, 27130), (995, 21704), (1592, 13565), (1990, 10852), (2713, 7960), (3980, 5426)]