21671883

素因数分解:

$3^2\times {\mathrm{31}}^1\times {\mathrm{173}}^1\times {\mathrm{449}}^1$

素因数の和:659

約数の個数: 24

約数和(自身を含む): 32572800

約数和(自身を除く): 10900917

約数列:

[1, 3, 9, 31, 93, 173, 279, 449, 519, 1347, 1557, 4041, 5363, 13919, 16089, 41757, 48267, 77677, 125271, 233031, 699093, 2407987, 7223961, 21671883]

約数ペア:

[(1, 21671883), (3, 7223961), (9, 2407987), (31, 699093), (93, 233031), (173, 125271), (279, 77677), (449, 48267), (519, 41757), (1347, 16089), (1557, 13919), (4041, 5363)]