9980496560

素因数分解:

$2^4\times 5^1\times {\mathrm{124756207}}^1$

素因数の和:124756220

約数の個数: 20

約数和(自身を含む): 23204654688

約数和(自身を除く): 13224158128

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 124756207, 249512414, 499024828, 623781035, 998049656, 1247562070, 1996099312, 2495124140, 4990248280, 9980496560]

約数ペア:

[(1, 9980496560), (2, 4990248280), (4, 2495124140), (5, 1996099312), (8, 1247562070), (10, 998049656), (16, 623781035), (20, 499024828), (40, 249512414), (80, 124756207)]