401020420

素因数分解:

$2^2\times 5^1\times {\mathrm{2903}}^1\times {\mathrm{6907}}^1$

素因数の和:9819

約数の個数: 24

約数和(自身を含む): 842554944

約数和(自身を除く): 441534524

約数列:

[1, 2, 4, 5, 10, 20, 2903, 5806, 6907, 11612, 13814, 14515, 27628, 29030, 34535, 58060, 69070, 138140, 20051021, 40102042, 80204084, 100255105, 200510210, 401020420]

約数ペア:

[(1, 401020420), (2, 200510210), (4, 100255105), (5, 80204084), (10, 40102042), (20, 20051021), (2903, 138140), (5806, 69070), (6907, 58060), (11612, 34535), (13814, 29030), (14515, 27628)]