21312562

素因数分解:

$2^1\times {\mathrm{31}}^1\times {\mathrm{173}}^1\times {\mathrm{1987}}^1$

素因数の和:2193

約数の個数: 16

約数和(自身を含む): 33207552

約数和(自身を除く): 11894990

約数列:

[1, 2, 31, 62, 173, 346, 1987, 3974, 5363, 10726, 61597, 123194, 343751, 687502, 10656281, 21312562]

約数ペア:

[(1, 21312562), (2, 10656281), (31, 687502), (62, 343751), (173, 123194), (346, 61597), (1987, 10726), (3974, 5363)]