21256722

素因数分解:

$2^1\times 3^3\times {\mathrm{37}}^1\times {\mathrm{10639}}^1$

素因数の和:10687

約数の個数: 32

約数和(自身を含む): 48518400

約数和(自身を除く): 27261678

約数列:

[1, 2, 3, 6, 9, 18, 27, 37, 54, 74, 111, 222, 333, 666, 999, 1998, 10639, 21278, 31917, 63834, 95751, 191502, 287253, 393643, 574506, 787286, 1180929, 2361858, 3542787, 7085574, 10628361, 21256722]

約数ペア:

[(1, 21256722), (2, 10628361), (3, 7085574), (6, 3542787), (9, 2361858), (18, 1180929), (27, 787286), (37, 574506), (54, 393643), (74, 287253), (111, 191502), (222, 95751), (333, 63834), (666, 31917), (999, 21278), (1998, 10639)]