31787990

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{439}}^1\times {\mathrm{557}}^1$

素因数の和:1016

約数の個数: 32

約数和(自身を含む): 61871040

約数和(自身を除く): 30083050

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 439, 557, 878, 1114, 2195, 2785, 4390, 5570, 5707, 7241, 11414, 14482, 28535, 36205, 57070, 72410, 244523, 489046, 1222615, 2445230, 3178799, 6357598, 15893995, 31787990]

約数ペア:

[(1, 31787990), (2, 15893995), (5, 6357598), (10, 3178799), (13, 2445230), (26, 1222615), (65, 489046), (130, 244523), (439, 72410), (557, 57070), (878, 36205), (1114, 28535), (2195, 14482), (2785, 11414), (4390, 7241), (5570, 5707)]