99800720

素因数分解:

$2^4\times 5^1\times {\mathrm{1247509}}^1$

素因数の和:1247522

約数の個数: 20

約数和(自身を含む): 232036860

約数和(自身を除く): 132236140

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1247509, 2495018, 4990036, 6237545, 9980072, 12475090, 19960144, 24950180, 49900360, 99800720]

約数ペア:

[(1, 99800720), (2, 49900360), (4, 24950180), (5, 19960144), (8, 12475090), (10, 9980072), (16, 6237545), (20, 4990036), (40, 2495018), (80, 1247509)]