31203440

素因数分解:

$2^4\times 5^1\times {\mathrm{390043}}^1$

素因数の和:390056

約数の個数: 20

約数和(自身を含む): 72548184

約数和(自身を除く): 41344744

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 390043, 780086, 1560172, 1950215, 3120344, 3900430, 6240688, 7800860, 15601720, 31203440]

約数ペア:

[(1, 31203440), (2, 15601720), (4, 7800860), (5, 6240688), (8, 3900430), (10, 3120344), (16, 1950215), (20, 1560172), (40, 780086), (80, 390043)]