31290280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{111751}}^1$

素因数の和:111769

約数の個数: 32

約数和(自身を含む): 80461440

約数和(自身を除く): 49171160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 111751, 223502, 447004, 558755, 782257, 894008, 1117510, 1564514, 2235020, 3129028, 3911285, 4470040, 6258056, 7822570, 15645140, 31290280]

約数ペア:

[(1, 31290280), (2, 15645140), (4, 7822570), (5, 6258056), (7, 4470040), (8, 3911285), (10, 3129028), (14, 2235020), (20, 1564514), (28, 1117510), (35, 894008), (40, 782257), (56, 558755), (70, 447004), (140, 223502), (280, 111751)]