720698728

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{128147}}^1$

素因数の和:128209

約数の個数: 32

約数和(自身を含む): 1460887200

約数和(自身を除く): 740188472

約数列:

[1, 2, 4, 8, 19, 37, 38, 74, 76, 148, 152, 296, 703, 1406, 2812, 5624, 128147, 256294, 512588, 1025176, 2434793, 4741439, 4869586, 9482878, 9739172, 18965756, 19478344, 37931512, 90087341, 180174682, 360349364, 720698728]

約数ペア:

[(1, 720698728), (2, 360349364), (4, 180174682), (8, 90087341), (19, 37931512), (37, 19478344), (38, 18965756), (74, 9739172), (76, 9482878), (148, 4869586), (152, 4741439), (296, 2434793), (703, 1025176), (1406, 512588), (2812, 256294), (5624, 128147)]