19561431

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{347}}^1$

素因数の和:435

約数の個数: 32

約数和(自身を含む): 29399040

約数和(自身を除く): 9837609

約数列:

[1, 3, 19, 23, 43, 57, 69, 129, 347, 437, 817, 989, 1041, 1311, 2451, 2967, 6593, 7981, 14921, 18791, 19779, 23943, 44763, 56373, 151639, 283499, 343183, 454917, 850497, 1029549, 6520477, 19561431]

約数ペア:

[(1, 19561431), (3, 6520477), (19, 1029549), (23, 850497), (43, 454917), (57, 343183), (69, 283499), (129, 151639), (347, 56373), (437, 44763), (817, 23943), (989, 19779), (1041, 18791), (1311, 14921), (2451, 7981), (2967, 6593)]