21761855

素因数分解:

$5^1\times {\mathrm{59}}^1\times {\mathrm{71}}^1\times {\mathrm{1039}}^1$

素因数の和:1174

約数の個数: 16

約数和(自身を含む): 26956800

約数和(自身を除く): 5194945

約数列:

[1, 5, 59, 71, 295, 355, 1039, 4189, 5195, 20945, 61301, 73769, 306505, 368845, 4352371, 21761855]

約数ペア:

[(1, 21761855), (5, 4352371), (59, 368845), (71, 306505), (295, 73769), (355, 61301), (1039, 20945), (4189, 5195)]