199985720

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{454513}}^1$

素因数の和:454535

約数の個数: 32

約数和(自身を含む): 490875120

約数和(自身を除く): 290889400

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 454513, 909026, 1818052, 2272565, 3636104, 4545130, 4999643, 9090260, 9999286, 18180520, 19998572, 24998215, 39997144, 49996430, 99992860, 199985720]

約数ペア:

[(1, 199985720), (2, 99992860), (4, 49996430), (5, 39997144), (8, 24998215), (10, 19998572), (11, 18180520), (20, 9999286), (22, 9090260), (40, 4999643), (44, 4545130), (55, 3636104), (88, 2272565), (110, 1818052), (220, 909026), (440, 454513)]