21264729

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{137}}^1\times {\mathrm{1669}}^1$

素因数の和:1840

約数の個数: 16

約数和(自身を含む): 29498880

約数和(自身を除く): 8234151

約数列:

[1, 3, 31, 93, 137, 411, 1669, 4247, 5007, 12741, 51739, 155217, 228653, 685959, 7088243, 21264729]

約数ペア:

[(1, 21264729), (3, 7088243), (31, 685959), (93, 228653), (137, 155217), (411, 51739), (1669, 12741), (4247, 5007)]