20653561720

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{1613}}^1\times {\mathrm{29101}}^1$

素因数の和:30736

約数の個数: 64

約数和(自身を含む): 50728278240

約数和(自身を除く): 30074716520

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 1613, 3226, 6452, 8065, 12904, 16130, 17743, 29101, 32260, 35486, 58202, 64520, 70972, 88715, 116404, 141944, 145505, 177430, 232808, 291010, 320111, 354860, 582020, 640222, 709720, 1164040, 1280444, 1600555, 2560888, 3201110, 6402220, 12804440, 46939913, 93879826, 187759652, 234699565, 375519304, 469399130, 516339043, 938798260, 1032678086, 1877596520, 2065356172, 2581695215, 4130712344, 5163390430, 10326780860, 20653561720]

約数ペア:

[(1, 20653561720), (2, 10326780860), (4, 5163390430), (5, 4130712344), (8, 2581695215), (10, 2065356172), (11, 1877596520), (20, 1032678086), (22, 938798260), (40, 516339043), (44, 469399130), (55, 375519304), (88, 234699565), (110, 187759652), (220, 93879826), (440, 46939913), (1613, 12804440), (3226, 6402220), (6452, 3201110), (8065, 2560888), (12904, 1600555), (16130, 1280444), (17743, 1164040), (29101, 709720), (32260, 640222), (35486, 582020), (58202, 354860), (64520, 320111), (70972, 291010), (88715, 232808), (116404, 177430), (141944, 145505)]