2813020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{283}}^1$

素因数の和:370

約数の個数: 48

約数和(自身を含む): 6870528

約数和(自身を除く): 4057508

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 283, 284, 355, 497, 566, 710, 994, 1132, 1415, 1420, 1981, 1988, 2485, 2830, 3962, 4970, 5660, 7924, 9905, 9940, 19810, 20093, 39620, 40186, 80372, 100465, 140651, 200930, 281302, 401860, 562604, 703255, 1406510, 2813020]

約数ペア:

[(1, 2813020), (2, 1406510), (4, 703255), (5, 562604), (7, 401860), (10, 281302), (14, 200930), (20, 140651), (28, 100465), (35, 80372), (70, 40186), (71, 39620), (140, 20093), (142, 19810), (283, 9940), (284, 9905), (355, 7924), (497, 5660), (566, 4970), (710, 3962), (994, 2830), (1132, 2485), (1415, 1988), (1420, 1981)]