31891899

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{193}}^1\times {\mathrm{223}}^1$

素因数の和:451

約数の個数: 32

約数和(自身を含む): 48670720

約数和(自身を除く): 16778821

約数列:

[1, 3, 13, 19, 39, 57, 193, 223, 247, 579, 669, 741, 2509, 2899, 3667, 4237, 7527, 8697, 11001, 12711, 43039, 47671, 55081, 129117, 143013, 165243, 559507, 817741, 1678521, 2453223, 10630633, 31891899]

約数ペア:

[(1, 31891899), (3, 10630633), (13, 2453223), (19, 1678521), (39, 817741), (57, 559507), (193, 165243), (223, 143013), (247, 129117), (579, 55081), (669, 47671), (741, 43039), (2509, 12711), (2899, 11001), (3667, 8697), (4237, 7527)]