209489720

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{43283}}^1$

素因数の和:43316

約数の個数: 48

約数和(自身を含む): 518109480

約数和(自身を除く): 308619760

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 121, 220, 242, 440, 484, 605, 968, 1210, 2420, 4840, 43283, 86566, 173132, 216415, 346264, 432830, 476113, 865660, 952226, 1731320, 1904452, 2380565, 3808904, 4761130, 5237243, 9522260, 10474486, 19044520, 20948972, 26186215, 41897944, 52372430, 104744860, 209489720]

約数ペア:

[(1, 209489720), (2, 104744860), (4, 52372430), (5, 41897944), (8, 26186215), (10, 20948972), (11, 19044520), (20, 10474486), (22, 9522260), (40, 5237243), (44, 4761130), (55, 3808904), (88, 2380565), (110, 1904452), (121, 1731320), (220, 952226), (242, 865660), (440, 476113), (484, 432830), (605, 346264), (968, 216415), (1210, 173132), (2420, 86566), (4840, 43283)]