20426824

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{643}}^1$

素因数の和:698

約数の個数: 48

約数和(自身を含む): 44165520

約数和(自身を除く): 23738696

約数列:

[1, 2, 4, 8, 11, 19, 22, 38, 44, 76, 88, 152, 209, 361, 418, 643, 722, 836, 1286, 1444, 1672, 2572, 2888, 3971, 5144, 7073, 7942, 12217, 14146, 15884, 24434, 28292, 31768, 48868, 56584, 97736, 134387, 232123, 268774, 464246, 537548, 928492, 1075096, 1856984, 2553353, 5106706, 10213412, 20426824]

約数ペア:

[(1, 20426824), (2, 10213412), (4, 5106706), (8, 2553353), (11, 1856984), (19, 1075096), (22, 928492), (38, 537548), (44, 464246), (76, 268774), (88, 232123), (152, 134387), (209, 97736), (361, 56584), (418, 48868), (643, 31768), (722, 28292), (836, 24434), (1286, 15884), (1444, 14146), (1672, 12217), (2572, 7942), (2888, 7073), (3971, 5144)]