19961980

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{14897}}^1$

素因数の和:14973

約数の個数: 24

約数和(自身を含む): 42548688

約数和(自身を除く): 22586708

約数列:

[1, 2, 4, 5, 10, 20, 67, 134, 268, 335, 670, 1340, 14897, 29794, 59588, 74485, 148970, 297940, 998099, 1996198, 3992396, 4990495, 9980990, 19961980]

約数ペア:

[(1, 19961980), (2, 9980990), (4, 4990495), (5, 3992396), (10, 1996198), (20, 998099), (67, 297940), (134, 148970), (268, 74485), (335, 59588), (670, 29794), (1340, 14897)]