21428456

素因数分解:

$2^3\times 7^1\times {\mathrm{23}}^1\times {\mathrm{127}}^1\times {\mathrm{131}}^1$

素因数の和:294

約数の個数: 64

約数和(自身を含む): 48660480

約数和(自身を除く): 27232024

約数列:

[1, 2, 4, 7, 8, 14, 23, 28, 46, 56, 92, 127, 131, 161, 184, 254, 262, 322, 508, 524, 644, 889, 917, 1016, 1048, 1288, 1778, 1834, 2921, 3013, 3556, 3668, 5842, 6026, 7112, 7336, 11684, 12052, 16637, 20447, 21091, 23368, 24104, 33274, 40894, 42182, 66548, 81788, 84364, 116459, 133096, 163576, 168728, 232918, 382651, 465836, 765302, 931672, 1530604, 2678557, 3061208, 5357114, 10714228, 21428456]

約数ペア:

[(1, 21428456), (2, 10714228), (4, 5357114), (7, 3061208), (8, 2678557), (14, 1530604), (23, 931672), (28, 765302), (46, 465836), (56, 382651), (92, 232918), (127, 168728), (131, 163576), (161, 133096), (184, 116459), (254, 84364), (262, 81788), (322, 66548), (508, 42182), (524, 40894), (644, 33274), (889, 24104), (917, 23368), (1016, 21091), (1048, 20447), (1288, 16637), (1778, 12052), (1834, 11684), (2921, 7336), (3013, 7112), (3556, 6026), (3668, 5842)]