31390040

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71341}}^1$

素因数の和:71363

約数の個数: 32

約数和(自身を含む): 77049360

約数和(自身を除く): 45659320

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 71341, 142682, 285364, 356705, 570728, 713410, 784751, 1426820, 1569502, 2853640, 3139004, 3923755, 6278008, 7847510, 15695020, 31390040]

約数ペア:

[(1, 31390040), (2, 15695020), (4, 7847510), (5, 6278008), (8, 3923755), (10, 3139004), (11, 2853640), (20, 1569502), (22, 1426820), (40, 784751), (44, 713410), (55, 570728), (88, 356705), (110, 285364), (220, 142682), (440, 71341)]