19953736

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{197}}^1\times {\mathrm{1151}}^1$

素因数の和:1365

約数の個数: 32

約数和(自身を含む): 41057280

約数和(自身を除く): 21103544

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 197, 394, 788, 1151, 1576, 2167, 2302, 4334, 4604, 8668, 9208, 12661, 17336, 25322, 50644, 101288, 226747, 453494, 906988, 1813976, 2494217, 4988434, 9976868, 19953736]

約数ペア:

[(1, 19953736), (2, 9976868), (4, 4988434), (8, 2494217), (11, 1813976), (22, 906988), (44, 453494), (88, 226747), (197, 101288), (394, 50644), (788, 25322), (1151, 17336), (1576, 12661), (2167, 9208), (2302, 8668), (4334, 4604)]