8920840

素因数分解:

$2^3\times 5^1\times {\mathrm{83}}^1\times {\mathrm{2687}}^1$

素因数の和:2781

約数の個数: 32

約数和(自身を含む): 20321280

約数和(自身を除く): 11400440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 83, 166, 332, 415, 664, 830, 1660, 2687, 3320, 5374, 10748, 13435, 21496, 26870, 53740, 107480, 223021, 446042, 892084, 1115105, 1784168, 2230210, 4460420, 8920840]

約数ペア:

[(1, 8920840), (2, 4460420), (4, 2230210), (5, 1784168), (8, 1115105), (10, 892084), (20, 446042), (40, 223021), (83, 107480), (166, 53740), (332, 26870), (415, 21496), (664, 13435), (830, 10748), (1660, 5374), (2687, 3320)]