21508299

素因数分解:

$3^2\times {\mathrm{43}}^1\times {\mathrm{149}}^1\times {\mathrm{373}}^1$

素因数の和:571

約数の個数: 24

約数和(自身を含む): 32089200

約数和(自身を除く): 10580901

約数列:

[1, 3, 9, 43, 129, 149, 373, 387, 447, 1119, 1341, 3357, 6407, 16039, 19221, 48117, 55577, 57663, 144351, 166731, 500193, 2389811, 7169433, 21508299]

約数ペア:

[(1, 21508299), (3, 7169433), (9, 2389811), (43, 500193), (129, 166731), (149, 144351), (373, 57663), (387, 55577), (447, 48117), (1119, 19221), (1341, 16039), (3357, 6407)]