28080040

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{18973}}^1$

素因数の和:19021

約数の個数: 32

約数和(自身を含む): 64891080

約数和(自身を除く): 36811040

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 148, 185, 296, 370, 740, 1480, 18973, 37946, 75892, 94865, 151784, 189730, 379460, 702001, 758920, 1404002, 2808004, 3510005, 5616008, 7020010, 14040020, 28080040]

約数ペア:

[(1, 28080040), (2, 14040020), (4, 7020010), (5, 5616008), (8, 3510005), (10, 2808004), (20, 1404002), (37, 758920), (40, 702001), (74, 379460), (148, 189730), (185, 151784), (296, 94865), (370, 75892), (740, 37946), (1480, 18973)]