21271809

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{5623}}^1$

素因数の和:5736

約数の個数: 16

約数和(自身を含む): 30864512

約数和(自身を除く): 9592703

約数列:

[1, 3, 13, 39, 97, 291, 1261, 3783, 5623, 16869, 73099, 219297, 545431, 1636293, 7090603, 21271809]

約数ペア:

[(1, 21271809), (3, 7090603), (13, 1636293), (39, 545431), (97, 219297), (291, 73099), (1261, 16869), (3783, 5623)]