18968840

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{2269}}^1$

素因数の和:2310

約数の個数: 64

約数和(自身を含む): 49032000

約数和(自身を除く): 30063160

約数列:

[1, 2, 4, 5, 8, 10, 11, 19, 20, 22, 38, 40, 44, 55, 76, 88, 95, 110, 152, 190, 209, 220, 380, 418, 440, 760, 836, 1045, 1672, 2090, 2269, 4180, 4538, 8360, 9076, 11345, 18152, 22690, 24959, 43111, 45380, 49918, 86222, 90760, 99836, 124795, 172444, 199672, 215555, 249590, 344888, 431110, 474221, 499180, 862220, 948442, 998360, 1724440, 1896884, 2371105, 3793768, 4742210, 9484420, 18968840]

約数ペア:

[(1, 18968840), (2, 9484420), (4, 4742210), (5, 3793768), (8, 2371105), (10, 1896884), (11, 1724440), (19, 998360), (20, 948442), (22, 862220), (38, 499180), (40, 474221), (44, 431110), (55, 344888), (76, 249590), (88, 215555), (95, 199672), (110, 172444), (152, 124795), (190, 99836), (209, 90760), (220, 86222), (380, 49918), (418, 45380), (440, 43111), (760, 24959), (836, 22690), (1045, 18152), (1672, 11345), (2090, 9076), (2269, 8360), (4180, 4538)]