7821940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{55871}}^1$

素因数の和:55887

約数の個数: 24

約数和(自身を含む): 18772992

約数和(自身を除く): 10951052

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 55871, 111742, 223484, 279355, 391097, 558710, 782194, 1117420, 1564388, 1955485, 3910970, 7821940]

約数ペア:

[(1, 7821940), (2, 3910970), (4, 1955485), (5, 1564388), (7, 1117420), (10, 782194), (14, 558710), (20, 391097), (28, 279355), (35, 223484), (70, 111742), (140, 55871)]