21179368

素因数分解:

$2^3\times 7^2\times {\mathrm{97}}^1\times {\mathrm{557}}^1$

素因数の和:674

約数の個数: 48

約数和(自身を含む): 46754820

約数和(自身を除く): 25575452

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 97, 98, 194, 196, 388, 392, 557, 679, 776, 1114, 1358, 2228, 2716, 3899, 4456, 4753, 5432, 7798, 9506, 15596, 19012, 27293, 31192, 38024, 54029, 54586, 108058, 109172, 216116, 218344, 378203, 432232, 756406, 1512812, 2647421, 3025624, 5294842, 10589684, 21179368]

約数ペア:

[(1, 21179368), (2, 10589684), (4, 5294842), (7, 3025624), (8, 2647421), (14, 1512812), (28, 756406), (49, 432232), (56, 378203), (97, 218344), (98, 216116), (194, 109172), (196, 108058), (388, 54586), (392, 54029), (557, 38024), (679, 31192), (776, 27293), (1114, 19012), (1358, 15596), (2228, 9506), (2716, 7798), (3899, 5432), (4456, 4753)]