21228345

素因数分解:

$3^3\times 5^1\times {\mathrm{157247}}^1$

素因数の和:157261

約数の個数: 16

約数和(自身を含む): 37739520

約数和(自身を除く): 16511175

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 157247, 471741, 786235, 1415223, 2358705, 4245669, 7076115, 21228345]

約数ペア:

[(1, 21228345), (3, 7076115), (5, 4245669), (9, 2358705), (15, 1415223), (27, 786235), (45, 471741), (135, 157247)]