131183440

素因数分解:

$2^4\times 5^1\times {\mathrm{1639793}}^1$

素因数の和:1639806

約数の個数: 20

約数和(自身を含む): 305001684

約数和(自身を除く): 173818244

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1639793, 3279586, 6559172, 8198965, 13118344, 16397930, 26236688, 32795860, 65591720, 131183440]

約数ペア:

[(1, 131183440), (2, 65591720), (4, 32795860), (5, 26236688), (8, 16397930), (10, 13118344), (16, 8198965), (20, 6559172), (40, 3279586), (80, 1639793)]