20191857

素因数分解:

$3^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{113}}^1\times {\mathrm{127}}^1$

素因数の和:317

約数の個数: 32

約数和(自身を含む): 31752192

約数和(自身を除く): 11560335

約数列:

[1, 3, 7, 21, 67, 113, 127, 201, 339, 381, 469, 791, 889, 1407, 2373, 2667, 7571, 8509, 14351, 22713, 25527, 43053, 52997, 59563, 100457, 158991, 178689, 301371, 961517, 2884551, 6730619, 20191857]

約数ペア:

[(1, 20191857), (3, 6730619), (7, 2884551), (21, 961517), (67, 301371), (113, 178689), (127, 158991), (201, 100457), (339, 59563), (381, 52997), (469, 43053), (791, 25527), (889, 22713), (1407, 14351), (2373, 8509), (2667, 7571)]