19769560

素因数分解:

$2^3\times 5^1\times {\mathrm{509}}^1\times {\mathrm{971}}^1$

素因数の和:1491

約数の個数: 32

約数和(自身を含む): 44614800

約数和(自身を除く): 24845240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 509, 971, 1018, 1942, 2036, 2545, 3884, 4072, 4855, 5090, 7768, 9710, 10180, 19420, 20360, 38840, 494239, 988478, 1976956, 2471195, 3953912, 4942390, 9884780, 19769560]

約数ペア:

[(1, 19769560), (2, 9884780), (4, 4942390), (5, 3953912), (8, 2471195), (10, 1976956), (20, 988478), (40, 494239), (509, 38840), (971, 20360), (1018, 19420), (1942, 10180), (2036, 9710), (2545, 7768), (3884, 5090), (4072, 4855)]