21628131

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{1289}}^1$

素因数の和:1363

約数の個数: 32

約数和(自身を含む): 35665920

約数和(自身を除く): 14037789

約数列:

[1, 3, 7, 17, 21, 47, 51, 119, 141, 329, 357, 799, 987, 1289, 2397, 3867, 5593, 9023, 16779, 21913, 27069, 60583, 65739, 153391, 181749, 424081, 460173, 1029911, 1272243, 3089733, 7209377, 21628131]

約数ペア:

[(1, 21628131), (3, 7209377), (7, 3089733), (17, 1272243), (21, 1029911), (47, 460173), (51, 424081), (119, 181749), (141, 153391), (329, 65739), (357, 60583), (799, 27069), (987, 21913), (1289, 16779), (2397, 9023), (3867, 5593)]