201998840

素因数分解:

$2^3\times 5^1\times {\mathrm{821}}^1\times {\mathrm{6151}}^1$

素因数の和:6983

約数の個数: 32

約数和(自身を含む): 455124960

約数和(自身を除く): 253126120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 821, 1642, 3284, 4105, 6151, 6568, 8210, 12302, 16420, 24604, 30755, 32840, 49208, 61510, 123020, 246040, 5049971, 10099942, 20199884, 25249855, 40399768, 50499710, 100999420, 201998840]

約数ペア:

[(1, 201998840), (2, 100999420), (4, 50499710), (5, 40399768), (8, 25249855), (10, 20199884), (20, 10099942), (40, 5049971), (821, 246040), (1642, 123020), (3284, 61510), (4105, 49208), (6151, 32840), (6568, 30755), (8210, 24604), (12302, 16420)]