196999999

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{521}}^1\times {\mathrm{2843}}^1$

素因数の和:3390

約数の個数: 16

約数和(自身を含む): 237530880

約数和(自身を除く): 40530881

約数列:

[1, 7, 19, 133, 521, 2843, 3647, 9899, 19901, 54017, 69293, 378119, 1481203, 10368421, 28142857, 196999999]

約数ペア:

[(1, 196999999), (7, 28142857), (19, 10368421), (133, 1481203), (521, 378119), (2843, 69293), (3647, 54017), (9899, 19901)]