21969603

素因数分解:

$3^3\times {\mathrm{43}}^1\times {\mathrm{127}}^1\times {\mathrm{149}}^1$

素因数の和:328

約数の個数: 32

約数和(自身を含む): 33792000

約数和(自身を除く): 11822397

約数列:

[1, 3, 9, 27, 43, 127, 129, 149, 381, 387, 447, 1143, 1161, 1341, 3429, 4023, 5461, 6407, 16383, 18923, 19221, 49149, 56769, 57663, 147447, 170307, 172989, 510921, 813689, 2441067, 7323201, 21969603]

約数ペア:

[(1, 21969603), (3, 7323201), (9, 2441067), (27, 813689), (43, 510921), (127, 172989), (129, 170307), (149, 147447), (381, 57663), (387, 56769), (447, 49149), (1143, 19221), (1161, 18923), (1341, 16383), (3429, 6407), (4023, 5461)]