21369579

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{1171}}^1$

素因数の和:1271

約数の個数: 32

約数和(自身を含む): 36003840

約数和(自身を除く): 14634261

約数列:

[1, 3, 7, 11, 21, 33, 77, 79, 231, 237, 553, 869, 1171, 1659, 2607, 3513, 6083, 8197, 12881, 18249, 24591, 38643, 90167, 92509, 270501, 277527, 647563, 1017599, 1942689, 3052797, 7123193, 21369579]

約数ペア:

[(1, 21369579), (3, 7123193), (7, 3052797), (11, 1942689), (21, 1017599), (33, 647563), (77, 277527), (79, 270501), (231, 92509), (237, 90167), (553, 38643), (869, 24591), (1171, 18249), (1659, 12881), (2607, 8197), (3513, 6083)]