20387199

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{57107}}^1$

素因数の和:57134

約数の個数: 16

約数和(自身を含む): 32894208

約数和(自身を除く): 12507009

約数列:

[1, 3, 7, 17, 21, 51, 119, 357, 57107, 171321, 399749, 970819, 1199247, 2912457, 6795733, 20387199]

約数ペア:

[(1, 20387199), (3, 6795733), (7, 2912457), (17, 1199247), (21, 970819), (51, 399749), (119, 171321), (357, 57107)]