21076881

素因数分解:

$3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{53}}^1\times {\mathrm{653}}^1$

素因数の和:745

約数の個数: 32

約数和(自身を含む): 33903360

約数和(自身を除く): 12826479

約数列:

[1, 3, 7, 21, 29, 53, 87, 159, 203, 371, 609, 653, 1113, 1537, 1959, 4571, 4611, 10759, 13713, 18937, 32277, 34609, 56811, 103827, 132559, 242263, 397677, 726789, 1003661, 3010983, 7025627, 21076881]

約数ペア:

[(1, 21076881), (3, 7025627), (7, 3010983), (21, 1003661), (29, 726789), (53, 397677), (87, 242263), (159, 132559), (203, 103827), (371, 56811), (609, 34609), (653, 32277), (1113, 18937), (1537, 13713), (1959, 10759), (4571, 4611)]