20766707720

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{197}}^1\times {\mathrm{239579}}^1$

素因数の和:239798

約数の個数: 64

約数和(自身を含む): 51231787200

約数和(自身を除く): 30465079480

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 197, 220, 394, 440, 788, 985, 1576, 1970, 2167, 3940, 4334, 7880, 8668, 10835, 17336, 21670, 43340, 86680, 239579, 479158, 958316, 1197895, 1916632, 2395790, 2635369, 4791580, 5270738, 9583160, 10541476, 13176845, 21082952, 26353690, 47197063, 52707380, 94394126, 105414760, 188788252, 235985315, 377576504, 471970630, 519167693, 943941260, 1038335386, 1887882520, 2076670772, 2595838465, 4153341544, 5191676930, 10383353860, 20766707720]

約数ペア:

[(1, 20766707720), (2, 10383353860), (4, 5191676930), (5, 4153341544), (8, 2595838465), (10, 2076670772), (11, 1887882520), (20, 1038335386), (22, 943941260), (40, 519167693), (44, 471970630), (55, 377576504), (88, 235985315), (110, 188788252), (197, 105414760), (220, 94394126), (394, 52707380), (440, 47197063), (788, 26353690), (985, 21082952), (1576, 13176845), (1970, 10541476), (2167, 9583160), (3940, 5270738), (4334, 4791580), (7880, 2635369), (8668, 2395790), (10835, 1916632), (17336, 1197895), (21670, 958316), (43340, 479158), (86680, 239579)]