87156740

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{197}}^1\times {\mathrm{2011}}^1$

素因数の和:2228

約数の個数: 48

約数和(自身を含む): 200781504

約数和(自身を除く): 113624764

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 197, 220, 394, 788, 985, 1970, 2011, 2167, 3940, 4022, 4334, 8044, 8668, 10055, 10835, 20110, 21670, 22121, 40220, 43340, 44242, 88484, 110605, 221210, 396167, 442420, 792334, 1584668, 1980835, 3961670, 4357837, 7923340, 8715674, 17431348, 21789185, 43578370, 87156740]

約数ペア:

[(1, 87156740), (2, 43578370), (4, 21789185), (5, 17431348), (10, 8715674), (11, 7923340), (20, 4357837), (22, 3961670), (44, 1980835), (55, 1584668), (110, 792334), (197, 442420), (220, 396167), (394, 221210), (788, 110605), (985, 88484), (1970, 44242), (2011, 43340), (2167, 40220), (3940, 22121), (4022, 21670), (4334, 20110), (8044, 10835), (8668, 10055)]