31126840

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{18097}}^1$

素因数の和:18151

約数の個数: 32

約数和(自身を含む): 71668080

約数和(自身を除く): 40541240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 18097, 36194, 72388, 90485, 144776, 180970, 361940, 723880, 778171, 1556342, 3112684, 3890855, 6225368, 7781710, 15563420, 31126840]

約数ペア:

[(1, 31126840), (2, 15563420), (4, 7781710), (5, 6225368), (8, 3890855), (10, 3112684), (20, 1556342), (40, 778171), (43, 723880), (86, 361940), (172, 180970), (215, 144776), (344, 90485), (430, 72388), (860, 36194), (1720, 18097)]