27991755

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{193}}^1\times {\mathrm{293}}^1$

素因数の和:508

約数の個数: 48

約数和(自身を含む): 53385696

約数和(自身を除く): 25393941

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 99, 165, 193, 293, 495, 579, 879, 965, 1465, 1737, 2123, 2637, 2895, 3223, 4395, 6369, 8685, 9669, 10615, 13185, 16115, 19107, 29007, 31845, 48345, 56549, 95535, 145035, 169647, 282745, 508941, 622039, 848235, 1866117, 2544705, 3110195, 5598351, 9330585, 27991755]

約数ペア:

[(1, 27991755), (3, 9330585), (5, 5598351), (9, 3110195), (11, 2544705), (15, 1866117), (33, 848235), (45, 622039), (55, 508941), (99, 282745), (165, 169647), (193, 145035), (293, 95535), (495, 56549), (579, 48345), (879, 31845), (965, 29007), (1465, 19107), (1737, 16115), (2123, 13185), (2637, 10615), (2895, 9669), (3223, 8685), (4395, 6369)]