81990930

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{390433}}^1$

素因数の和:390450

約数の個数: 32

約数和(自身を含む): 224889984

約数和(自身を除く): 142899054

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210, 390433, 780866, 1171299, 1952165, 2342598, 2733031, 3904330, 5466062, 5856495, 8199093, 11712990, 13665155, 16398186, 27330310, 40995465, 81990930]

約数ペア:

[(1, 81990930), (2, 40995465), (3, 27330310), (5, 16398186), (6, 13665155), (7, 11712990), (10, 8199093), (14, 5856495), (15, 5466062), (21, 3904330), (30, 2733031), (35, 2342598), (42, 1952165), (70, 1171299), (105, 780866), (210, 390433)]