21877768

素因数分解:

$2^3\times {\mathrm{11}}^2\times {\mathrm{97}}^1\times {\mathrm{233}}^1$

素因数の和:358

約数の個数: 48

約数和(自身を含む): 45749340

約数和(自身を除く): 23871572

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 97, 121, 194, 233, 242, 388, 466, 484, 776, 932, 968, 1067, 1864, 2134, 2563, 4268, 5126, 8536, 10252, 11737, 20504, 22601, 23474, 28193, 45202, 46948, 56386, 90404, 93896, 112772, 180808, 225544, 248611, 497222, 994444, 1988888, 2734721, 5469442, 10938884, 21877768]

約数ペア:

[(1, 21877768), (2, 10938884), (4, 5469442), (8, 2734721), (11, 1988888), (22, 994444), (44, 497222), (88, 248611), (97, 225544), (121, 180808), (194, 112772), (233, 93896), (242, 90404), (388, 56386), (466, 46948), (484, 45202), (776, 28193), (932, 23474), (968, 22601), (1067, 20504), (1864, 11737), (2134, 10252), (2563, 8536), (4268, 5126)]