1291216400

素因数分解:

$2^4\times 5^2\times {\mathrm{3228041}}^1$

素因数の和:3228059

約数の個数: 30

約数和(自身を含む): 3102148362

約数和(自身を除く): 1810931962

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 3228041, 6456082, 12912164, 16140205, 25824328, 32280410, 51648656, 64560820, 80701025, 129121640, 161402050, 258243280, 322804100, 645608200, 1291216400]

約数ペア:

[(1, 1291216400), (2, 645608200), (4, 322804100), (5, 258243280), (8, 161402050), (10, 129121640), (16, 80701025), (20, 64560820), (25, 51648656), (40, 32280410), (50, 25824328), (80, 16140205), (100, 12912164), (200, 6456082), (400, 3228041)]