21381878

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{2593}}^1$

素因数の和:2652

約数の個数: 32

約数和(自身を含む): 39843840

約数和(自身を除く): 18461962

約数列:

[1, 2, 7, 14, 19, 31, 38, 62, 133, 217, 266, 434, 589, 1178, 2593, 4123, 5186, 8246, 18151, 36302, 49267, 80383, 98534, 160766, 344869, 562681, 689738, 1125362, 1527277, 3054554, 10690939, 21381878]

約数ペア:

[(1, 21381878), (2, 10690939), (7, 3054554), (14, 1527277), (19, 1125362), (31, 689738), (38, 562681), (62, 344869), (133, 160766), (217, 98534), (266, 80383), (434, 49267), (589, 36302), (1178, 18151), (2593, 8246), (4123, 5186)]