21222405

素因数分解:

$3^5\times 5^1\times {\mathrm{17467}}^1$

素因数の和:17487

約数の個数: 24

約数和(自身を含む): 38150112

約数和(自身を除く): 16927707

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 405, 1215, 17467, 52401, 87335, 157203, 262005, 471609, 786015, 1414827, 2358045, 4244481, 7074135, 21222405]

約数ペア:

[(1, 21222405), (3, 7074135), (5, 4244481), (9, 2358045), (15, 1414827), (27, 786015), (45, 471609), (81, 262005), (135, 157203), (243, 87335), (405, 52401), (1215, 17467)]