21021693

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{8273}}^1$

素因数の和:8305

約数の個数: 24

約数和(自身を含む): 35214144

約数和(自身を除く): 14192451

約数列:

[1, 3, 7, 11, 21, 33, 77, 121, 231, 363, 847, 2541, 8273, 24819, 57911, 91003, 173733, 273009, 637021, 1001033, 1911063, 3003099, 7007231, 21021693]

約数ペア:

[(1, 21021693), (3, 7007231), (7, 3003099), (11, 1911063), (21, 1001033), (33, 637021), (77, 273009), (121, 173733), (231, 91003), (363, 57911), (847, 24819), (2541, 8273)]