21369543

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{113}}^1\times {\mathrm{373}}^1$

素因数の和:515

約数の個数: 24

約数和(自身を含む): 31209552

約数和(自身を除く): 9840009

約数列:

[1, 3, 13, 39, 113, 169, 339, 373, 507, 1119, 1469, 4407, 4849, 14547, 19097, 42149, 57291, 63037, 126447, 189111, 547937, 1643811, 7123181, 21369543]

約数ペア:

[(1, 21369543), (3, 7123181), (13, 1643811), (39, 547937), (113, 189111), (169, 126447), (339, 63037), (373, 57291), (507, 42149), (1119, 19097), (1469, 14547), (4407, 4849)]