21816327

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{5431}}^1$

素因数の和:5550

約数の個数: 16

約数和(自身を含む): 31635968

約数和(自身を除く): 9819641

約数列:

[1, 3, 13, 39, 103, 309, 1339, 4017, 5431, 16293, 70603, 211809, 559393, 1678179, 7272109, 21816327]

約数ペア:

[(1, 21816327), (3, 7272109), (13, 1678179), (39, 559393), (103, 211809), (309, 70603), (1339, 16293), (4017, 5431)]