21419848

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{877}}^1$

素因数の和:997

約数の個数: 32

約数和(自身を含む): 41722560

約数和(自身を除く): 20302712

約数列:

[1, 2, 4, 8, 43, 71, 86, 142, 172, 284, 344, 568, 877, 1754, 3053, 3508, 6106, 7016, 12212, 24424, 37711, 62267, 75422, 124534, 150844, 249068, 301688, 498136, 2677481, 5354962, 10709924, 21419848]

約数ペア:

[(1, 21419848), (2, 10709924), (4, 5354962), (8, 2677481), (43, 498136), (71, 301688), (86, 249068), (142, 150844), (172, 124534), (284, 75422), (344, 62267), (568, 37711), (877, 24424), (1754, 12212), (3053, 7016), (3508, 6106)]