21352219

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{4339}}^1$

素因数の和:4402

約数の個数: 16

約数和(自身を含む): 26387200

約数和(自身を除く): 5034981

約数列:

[1, 7, 19, 37, 133, 259, 703, 4339, 4921, 30373, 82441, 160543, 577087, 1123801, 3050317, 21352219]

約数ペア:

[(1, 21352219), (7, 3050317), (19, 1123801), (37, 577087), (133, 160543), (259, 82441), (703, 30373), (4339, 4921)]