208520840

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{473911}}^1$

素因数の和:473933

約数の個数: 32

約数和(自身を含む): 511824960

約数和(自身を除く): 303304120

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 473911, 947822, 1895644, 2369555, 3791288, 4739110, 5213021, 9478220, 10426042, 18956440, 20852084, 26065105, 41704168, 52130210, 104260420, 208520840]

約数ペア:

[(1, 208520840), (2, 104260420), (4, 52130210), (5, 41704168), (8, 26065105), (10, 20852084), (11, 18956440), (20, 10426042), (22, 9478220), (40, 5213021), (44, 4739110), (55, 3791288), (88, 2369555), (110, 1895644), (220, 947822), (440, 473911)]