21109528

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{97}}^1\times {\mathrm{2473}}^1$

素因数の和:2587

約数の個数: 32

約数和(自身を含む): 43641360

約数和(自身を除く): 22531832

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 97, 194, 388, 776, 1067, 2134, 2473, 4268, 4946, 8536, 9892, 19784, 27203, 54406, 108812, 217624, 239881, 479762, 959524, 1919048, 2638691, 5277382, 10554764, 21109528]

約数ペア:

[(1, 21109528), (2, 10554764), (4, 5277382), (8, 2638691), (11, 1919048), (22, 959524), (44, 479762), (88, 239881), (97, 217624), (194, 108812), (388, 54406), (776, 27203), (1067, 19784), (2134, 9892), (2473, 8536), (4268, 4946)]