21605691

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{6323}}^1$

素因数の和:6410

約数の個数: 16

約数和(自身を含む): 30962304

約数和(自身を除く): 9356613

約数列:

[1, 3, 17, 51, 67, 201, 1139, 3417, 6323, 18969, 107491, 322473, 423641, 1270923, 7201897, 21605691]

約数ペア:

[(1, 21605691), (3, 7201897), (17, 1270923), (51, 423641), (67, 322473), (201, 107491), (1139, 18969), (3417, 6323)]