861940

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{607}}^1$

素因数の和:687

約数の個数: 24

約数和(自身を含む): 1838592

約数和(自身を除く): 976652

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 607, 710, 1214, 1420, 2428, 3035, 6070, 12140, 43097, 86194, 172388, 215485, 430970, 861940]

約数ペア:

[(1, 861940), (2, 430970), (4, 215485), (5, 172388), (10, 86194), (20, 43097), (71, 12140), (142, 6070), (284, 3035), (355, 2428), (607, 1420), (710, 1214)]