31980351

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{73}}^1\times {\mathrm{239}}^1$

素因数の和:375

約数の個数: 32

約数和(自身を含む): 47738880

約数和(自身を除く): 15758529

約数列:

[1, 3, 13, 39, 47, 73, 141, 219, 239, 611, 717, 949, 1833, 2847, 3107, 3431, 9321, 10293, 11233, 17447, 33699, 44603, 52341, 133809, 146029, 226811, 438087, 680433, 820009, 2460027, 10660117, 31980351]

約数ペア:

[(1, 31980351), (3, 10660117), (13, 2460027), (39, 820009), (47, 680433), (73, 438087), (141, 226811), (219, 146029), (239, 133809), (611, 52341), (717, 44603), (949, 33699), (1833, 17447), (2847, 11233), (3107, 10293), (3431, 9321)]