21007461

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{3779}}^1$

素因数の和:3908

約数の個数: 16

約数和(自身を含む): 29937600

約数和(自身を除く): 8930139

約数列:

[1, 3, 17, 51, 109, 327, 1853, 3779, 5559, 11337, 64243, 192729, 411911, 1235733, 7002487, 21007461]

約数ペア:

[(1, 21007461), (3, 7002487), (17, 1235733), (51, 411911), (109, 192729), (327, 64243), (1853, 11337), (3779, 5559)]