21757659

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{131}}^1\times {\mathrm{719}}^1$

素因数の和:871

約数の個数: 32

約数和(自身を含む): 36495360

約数和(自身を除く): 14737701

約数列:

[1, 3, 7, 11, 21, 33, 77, 131, 231, 393, 719, 917, 1441, 2157, 2751, 4323, 5033, 7909, 10087, 15099, 23727, 30261, 55363, 94189, 166089, 282567, 659323, 1036079, 1977969, 3108237, 7252553, 21757659]

約数ペア:

[(1, 21757659), (3, 7252553), (7, 3108237), (11, 1977969), (21, 1036079), (33, 659323), (77, 282567), (131, 166089), (231, 94189), (393, 55363), (719, 30261), (917, 23727), (1441, 15099), (2157, 10087), (2751, 7909), (4323, 5033)]